Complete Topology-Relative Closure, Interior and Membership

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This question bank has corresponding bilingual step-by-step derivations. Source candidate and English ai_candidate states are retained. AI review, finite computation and Lean formal proof are labelled separately.

batch-20261014-advance-20261101-r02-closure-and-interior-foundations · 2026-10-14 · 100 questions

This English edition is an AI candidate and does not yet have an OCME Atlas (GPT-6) Twin closure receipt.

1. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 2], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 2]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([1, 2], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([1, 2], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

2. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 2], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 2]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([1, 2], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([1, 2], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

3. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 3], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 3]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([1, 3], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([1, 3], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

4. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 3], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 3]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([1, 3], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([1, 3], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

5. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 4], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 4]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([1, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([1, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

6. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 4], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 4]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([1, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([1, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

7. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 2], [0, 1, 2], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 2]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([1, 2], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([1, 2], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

8. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 2], [0, 1, 2], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 2]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([1, 2], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([1, 2], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

9. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 2], [0, 2, 3], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 3]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([2, 3], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([2, 3], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

10. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 2], [0, 2, 3], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 3]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([2, 3], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([2, 3], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

11. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 2], [0, 2, 4], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 4]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([2, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([2, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

12. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 2], [0, 2, 4], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 4]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([2, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([2, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

13. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 3], [0, 1, 3], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 3]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([1, 3], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([1, 3], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

14. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 3], [0, 1, 3], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 3]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([1, 3], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([1, 3], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

15. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 3], [0, 2, 3], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 3]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([2, 3], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([2, 3], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

16. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 3], [0, 2, 3], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 3]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([2, 3], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([2, 3], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

17. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 3], [0, 3, 4], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[3, 4]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([3, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([3, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

18. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 3], [0, 3, 4], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[3, 4]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([3, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([3, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

19. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 4], [0, 1, 4], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 4]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([1, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([1, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

20. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 4], [0, 1, 4], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 4]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([1, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([1, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

21. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 4], [0, 2, 4], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 4]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([2, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([2, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

22. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 4], [0, 2, 4], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 4]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([2, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([2, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

23. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 4], [0, 3, 4], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[3, 4]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([3, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([3, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

24. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [0], [0, 4], [0, 3, 4], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[3, 4]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([3, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([3, 4], [[0, 1, 2, 3, 4], [1, 2, 3, 4]], [1, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

25. Closure Intersects All Closed Supersets in the Specified Topology

Use the complete finite topology=[[], [1], [0, 1], [0, 1, 2], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[0, 2]. Give (subset,closed_supersets,closure). Closed candidates are complements of the supplied opens in their input order; retain that order among qualifying supersets.

View answer and explanation

([0, 2], [[0, 1, 2, 3, 4], [0, 2, 3, 4]], [0, 2, 3, 4])

Form every closed set relative to this carrier, retain all that contain the subset and intersect them. One selected closed superset is not generally the closure. The exact result, retaining the requested order, is ([0, 2], [[0, 1, 2, 3, 4], [0, 2, 3, 4]], [0, 2, 3, 4]).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure · candidate

26. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 2], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 2]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([1, 2], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([1, 2], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

27. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 2], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 2]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([1, 2], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([1, 2], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

28. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 3], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 3]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([1, 3], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([1, 3], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

29. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 3], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 3]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([1, 3], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([1, 3], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

30. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 4], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 4]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([1, 4], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([1, 4], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

31. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 4], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 4]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([1, 4], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([1, 4], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

32. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 2], [0, 1, 2], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 2]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([1, 2], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([1, 2], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

33. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 2], [0, 1, 2], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 2]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([1, 2], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([1, 2], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

34. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 2], [0, 2, 3], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 3]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([2, 3], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([2, 3], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

35. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 2], [0, 2, 3], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 3]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([2, 3], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([2, 3], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

36. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 2], [0, 2, 4], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 4]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([2, 4], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([2, 4], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

37. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 2], [0, 2, 4], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 4]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([2, 4], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([2, 4], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

38. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 3], [0, 1, 3], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 3]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([1, 3], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([1, 3], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

39. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 3], [0, 1, 3], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 3]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([1, 3], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([1, 3], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

40. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 3], [0, 2, 3], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 3]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([2, 3], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([2, 3], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

41. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 3], [0, 2, 3], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 3]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([2, 3], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([2, 3], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

42. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 3], [0, 3, 4], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[3, 4]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([3, 4], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([3, 4], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

43. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 3], [0, 3, 4], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[3, 4]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([3, 4], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([3, 4], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

44. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 4], [0, 1, 4], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 4]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([1, 4], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([1, 4], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

45. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 4], [0, 1, 4], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 4]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([1, 4], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([1, 4], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

46. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 4], [0, 2, 4], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 4]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([2, 4], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([2, 4], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

47. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 4], [0, 2, 4], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 4]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([2, 4], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([2, 4], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

48. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 4], [0, 3, 4], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[3, 4]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([3, 4], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([3, 4], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

49. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [0], [0, 4], [0, 3, 4], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[3, 4]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([3, 4], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([3, 4], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

50. Interior Unites All Open Subsets, Not One Convenient Open Set

Use the complete finite topology=[[], [1], [0, 1], [0, 1, 2], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[0, 2]. Give (subset,open_subsets,interior), retaining original topology order among the qualifying opens.

View answer and explanation

([0, 2], [[]], [])

Select every open contained in the subset and take their union in increasing carrier order. The result is relative to this exact topology, not an unstated metric. The exact result, retaining the requested order, is ([0, 2], [[]], []).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior · candidate

51. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 2], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 2], point=0. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(0, [1, 2, 3, 4], No, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (0, [1, 2, 3, 4], No, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

52. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 2], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 2], point=1. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(1, [1, 2, 3, 4], Yes, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (1, [1, 2, 3, 4], Yes, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

53. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 3], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 3], point=3. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(3, [1, 2, 3, 4], Yes, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (3, [1, 2, 3, 4], Yes, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

54. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 3], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 3], point=4. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(4, [1, 2, 3, 4], Yes, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (4, [1, 2, 3, 4], Yes, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

55. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 4], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 4], point=3. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(3, [1, 2, 3, 4], Yes, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (3, [1, 2, 3, 4], Yes, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

56. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 4], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 4], point=0. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(0, [1, 2, 3, 4], No, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (0, [1, 2, 3, 4], No, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

57. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 2], [0, 1, 2], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 2], point=2. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(2, [1, 2, 3, 4], Yes, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (2, [1, 2, 3, 4], Yes, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

58. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 2], [0, 1, 2], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 2], point=1. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(1, [1, 2, 3, 4], Yes, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (1, [1, 2, 3, 4], Yes, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

59. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 2], [0, 2, 3], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 3], point=1. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(1, [1, 2, 3, 4], Yes, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (1, [1, 2, 3, 4], Yes, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

60. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 2], [0, 2, 3], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 3], point=1. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(1, [1, 2, 3, 4], Yes, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (1, [1, 2, 3, 4], Yes, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

61. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 2], [0, 2, 4], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 4], point=0. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(0, [1, 2, 3, 4], No, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (0, [1, 2, 3, 4], No, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

62. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 2], [0, 2, 4], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 4], point=2. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(2, [1, 2, 3, 4], Yes, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (2, [1, 2, 3, 4], Yes, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

63. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 3], [0, 1, 3], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 3], point=1. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(1, [1, 2, 3, 4], Yes, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (1, [1, 2, 3, 4], Yes, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

64. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 3], [0, 1, 3], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 3], point=4. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(4, [1, 2, 3, 4], Yes, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (4, [1, 2, 3, 4], Yes, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

65. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 3], [0, 2, 3], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 3], point=4. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(4, [1, 2, 3, 4], Yes, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (4, [1, 2, 3, 4], Yes, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

66. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 3], [0, 2, 3], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 3], point=0. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(0, [1, 2, 3, 4], No, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (0, [1, 2, 3, 4], No, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

67. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 3], [0, 3, 4], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[3, 4], point=3. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(3, [1, 2, 3, 4], Yes, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (3, [1, 2, 3, 4], Yes, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

68. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 3], [0, 3, 4], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[3, 4], point=4. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(4, [1, 2, 3, 4], Yes, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (4, [1, 2, 3, 4], Yes, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

69. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 4], [0, 1, 4], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 4], point=2. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(2, [1, 2, 3, 4], Yes, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (2, [1, 2, 3, 4], Yes, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

70. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 4], [0, 1, 4], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 4], point=2. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(2, [1, 2, 3, 4], Yes, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (2, [1, 2, 3, 4], Yes, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

71. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 4], [0, 2, 4], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 4], point=0. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(0, [1, 2, 3, 4], No, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (0, [1, 2, 3, 4], No, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

72. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 4], [0, 2, 4], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 4], point=4. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(4, [1, 2, 3, 4], Yes, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (4, [1, 2, 3, 4], Yes, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

73. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 4], [0, 3, 4], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[3, 4], point=3. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(3, [1, 2, 3, 4], Yes, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (3, [1, 2, 3, 4], Yes, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

74. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [0], [0, 4], [0, 3, 4], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[3, 4], point=2. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(2, [1, 2, 3, 4], Yes, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (2, [1, 2, 3, 4], Yes, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

75. Closure Membership May Hold outside the Original Subset

Use the complete finite topology=[[], [1], [0, 1], [0, 1, 2], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[0, 2], point=4. Give (point,closure,in_closure?,topology_relative_closure).

View answer and explanation

(4, [0, 2, 3, 4], Yes, topology_relative_closure)

Compute the full intersection of closed supersets first, then test this point against that closure. Do not replace closure membership with membership in the original subset. The exact result, retaining the requested order, is (4, [0, 2, 3, 4], Yes, topology_relative_closure).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-closure-membership · candidate

76. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 2], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 2], point=0. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(0, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (0, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

77. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 2], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 2], point=1. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(1, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (1, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

78. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 3], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 3], point=3. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(3, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (3, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

79. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 3], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 3], point=4. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(4, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (4, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

80. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 4], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 4], point=3. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(3, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (3, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

81. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 1], [0, 1, 4], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 4], point=0. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(0, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (0, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

82. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 2], [0, 1, 2], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 2], point=2. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(2, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (2, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

83. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 2], [0, 1, 2], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 2], point=1. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(1, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (1, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

84. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 2], [0, 2, 3], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 3], point=1. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(1, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (1, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

85. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 2], [0, 2, 3], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 3], point=1. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(1, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (1, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

86. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 2], [0, 2, 4], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 4], point=0. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(0, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (0, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

87. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 2], [0, 2, 4], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 4], point=2. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(2, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (2, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

88. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 3], [0, 1, 3], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 3], point=1. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(1, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (1, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

89. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 3], [0, 1, 3], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 3], point=4. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(4, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (4, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

90. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 3], [0, 2, 3], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 3], point=4. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(4, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (4, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

91. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 3], [0, 2, 3], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 3], point=0. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(0, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (0, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

92. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 3], [0, 3, 4], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[3, 4], point=3. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(3, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (3, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

93. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 3], [0, 3, 4], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[3, 4], point=4. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(4, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (4, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

94. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 4], [0, 1, 4], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 4], point=2. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(2, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (2, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

95. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 4], [0, 1, 4], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[1, 4], point=2. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(2, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (2, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

96. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 4], [0, 2, 4], [0, 1, 2, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 4], point=0. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(0, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (0, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

97. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 4], [0, 2, 4], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[2, 4], point=4. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(4, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (4, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

98. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 4], [0, 3, 4], [0, 1, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[3, 4], point=3. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(3, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (3, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

99. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [0], [0, 4], [0, 3, 4], [0, 2, 3, 4], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[3, 4], point=2. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(2, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (2, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

100. Interior Membership Needs an Open Neighborhood inside the Subset

Use the complete finite topology=[[], [1], [0, 1], [0, 1, 2], [0, 1, 2, 3], [0, 1, 2, 3, 4]] on the same carrier Fin(5)={0,…,4}. Every subset is an increasing duplicate-free carrier list. First check the unique empty/whole opens and all union/intersection closure obligations; finite topology suffices for exhaustive closure checks. Complements refer to this carrier. No metric is silently supplied. Subset=[0, 2], point=4. Give (point,interior,in_interior?,topology_relative_interior).

View answer and explanation

(4, [], No, topology_relative_interior)

Unite all opens contained in the subset, then test the point. Membership in the subset alone need not give membership in its interior. The exact result, retaining the requested order, is (4, [], No, topology_relative_interior).

Reviewed step-by-step derivation

Topological closure and interior · qf-mod32-topology-interior-membership · candidate

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