# OCME · Knowledge & practice explorer

302 MKO / 1,441 families / 360 batches / 36,000 questions.

36,000 second-context math/bilingual reviewed; 0 display/symbol-checked candidates. Source questions: candidate. English: ai_candidate. No new proof, Lean, SREG or training.

1 results; page 1/1.

## Question 21267: Relative Closedness Uses the Complement inside Y

- ID: `q-20261014-advance-20261108-r03-subspace-topology-0067`; number: 21267
- Processing: second_context_reviewed
- MKO: [mko-subspace-topology](/en/mko/mko-subspace-topology/)
- Family: [qf-mod39-subtop-relative-closed-audit](/en/explore/?family=qf-mod39-subtop-relative-closed-audit)
- Batch: [batch-20261014-advance-20261108-r03-subspace-topology-foundations](/en/explore/?batch=batch-20261014-advance-20261108-r03-subspace-topology-foundations)
- [Derivation](/en/questions/q-20261014-advance-20261108-r03-subspace-topology-0067/) / [Markdown](/en/questions/q-20261014-advance-20261108-r03-subspace-topology-0067/index.md) / [JSON](/data/question-derivations/questions/q-20261014-advance-20261108-r03-subspace-topology-0067.json)