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Question 14204: Two Certified Classes Are Equal or Disjoint

On this page
  1. Original question and givens
  2. Definition and scope
  3. Step-by-step derivation
  4. Reverse checks
  5. Result
  6. This question review and source binding

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R0027-14204 · q-20261014-advance-20261029-r07-equivalence-class-0079

Original question and givens

Use the complete carrier Fin(6)={0,…,5} and complete relation pairs=[[0, 0], [0, 1], [1, 0], [1, 1], [2, 2], [2, 3], [2, 4], [2, 5], [3, 2], [3, 3], [3, 4], [3, 5], [4, 2], [4, 3], [4, 4], [4, 5], [5, 2], [5, 3], [5, 4], [5, 5]]. Before forming classes, certify reflexivity, symmetry and transitivity on this same carrier; sampled pairs or visual clustering do not suffice. A class contains exactly every related carrier element, listed increasingly. Classes are equal or disjoint; no quotient operation or representative-independent algebra is constructed. a=3, b=4. Give (a,b,class_a,class_b,intersection,equal_or_disjoint?,classification). Classification is equal or disjoint.

  • G001 — Use the complete carrier Fin(6)={0,…,5} and complete relation pairs=[[0, 0], [0, 1], [1, 0], [1, 1], [2, 2], [2, 3], [2, 4], [2, 5], [3, 2], [3, 3], [3, 4], [3, 5], [4, 2], [4, 3], [4, 4], [4, 5], [5, 2], [5, 3], [5, 4], [5, 5]]. Before forming classes, certify reflexivity, symmetry and transitivity on this same carrier; sampled pairs or visual clustering do not suffice. A class contains exactly every related carrier element, listed increasingly. Classes are equal or disjoint; no quotient operation or representative-independent algebra is constructed. a=3, b=4. Give (a,b,class_a,class_b,intersection,equal_or_disjoint?,classification). Classification is equal or disjoint.

Definition and scope

Use the original question domain, assumptions and cited MKO definitions. This item has second-context mathematical and bilingual review, with the model, answer and every arithmetic step independently recomputed from the original parameters; the source question remains a candidate.

Step-by-step derivation

S001 · implies

Before

complete carrier Fin(6);raw relation=[[0, 0], [0, 1], [1, 0], [1, 1], [2, 2], [2, 3], [2, 4], [2, 5], [3, 2], [3, 3], [3, 4], [3, 5], [4, 2], [4, 3], [4, 4], [4, 5], [5, 2], [5, 3], [5, 4], [5, 5]]

After

sorted distinct ordered relation=[[0, 0], [0, 1], [1, 0], [1, 1], [2, 2], [2, 3], [2, 4], [2, 5], [3, 2], [3, 3], [3, 4], [3, 5], [4, 2], [4, 3], [4, 4], [4, 5], [5, 2], [5, 3], [5, 4], [5, 5]];missing reflexive=[];missing reverses=[];missing transitive triples=[]

Conditions: none

Qualify reflexivity,symmetry and every composable pair's transitivity before forming classes.Do not silently deduplicate invalid inputs or infer equivalence from samples or connected clustering.

Step identifiers and dependencies

Rule: equivalence_relation_complete_parent_qualification · Uses: G001

S002 · implies

Before

first class:representative=3;carrier candidate=0

After

ordered relation pair present=No;class membership=No

Conditions: none

By[a]={x:aRx},inspect the entire carrier,not a few witnesses or visual grouping.Reflexivity includes the representative itself.

Step identifiers and dependencies

Rule: equivalence_class_every_carrier_element · Uses: G001, S001

S003 · implies

Before

first class:representative=3;carrier candidate=1

After

ordered relation pair present=No;class membership=No

Conditions: none

By[a]={x:aRx},inspect the entire carrier,not a few witnesses or visual grouping.Reflexivity includes the representative itself.

Step identifiers and dependencies

Rule: equivalence_class_every_carrier_element · Uses: G001, S002

S004 · implies

Before

first class:representative=3;carrier candidate=2

After

ordered relation pair present=Yes;class membership=Yes

Conditions: none

By[a]={x:aRx},inspect the entire carrier,not a few witnesses or visual grouping.Reflexivity includes the representative itself.

Step identifiers and dependencies

Rule: equivalence_class_every_carrier_element · Uses: G001, S003

S005 · implies

Before

first class:representative=3;carrier candidate=3

After

ordered relation pair present=Yes;class membership=Yes

Conditions: none

By[a]={x:aRx},inspect the entire carrier,not a few witnesses or visual grouping.Reflexivity includes the representative itself.

Step identifiers and dependencies

Rule: equivalence_class_every_carrier_element · Uses: G001, S004

S006 · implies

Before

first class:representative=3;carrier candidate=4

After

ordered relation pair present=Yes;class membership=Yes

Conditions: none

By[a]={x:aRx},inspect the entire carrier,not a few witnesses or visual grouping.Reflexivity includes the representative itself.

Step identifiers and dependencies

Rule: equivalence_class_every_carrier_element · Uses: G001, S005

S007 · implies

Before

first class:representative=3;carrier candidate=5

After

ordered relation pair present=Yes;class membership=Yes

Conditions: none

By[a]={x:aRx},inspect the entire carrier,not a few witnesses or visual grouping.Reflexivity includes the representative itself.

Step identifiers and dependencies

Rule: equivalence_class_every_carrier_element · Uses: G001, S006

S008 · implies

Before

first class:all carrier labels tested with representative=3

After

complete class in increasing order=[2, 3, 4, 5]

Conditions: none

The entire carrier has been inspected;this list is the representative's full equivalence class,not a local sample.

Step identifiers and dependencies

Rule: class_complete_inventory_not_sample · Uses: G001, S007

S009 · implies

Before

second class:representative=4;carrier candidate=0

After

ordered relation pair present=No;class membership=No

Conditions: none

By[a]={x:aRx},inspect the entire carrier,not a few witnesses or visual grouping.Reflexivity includes the representative itself.

Step identifiers and dependencies

Rule: equivalence_class_every_carrier_element · Uses: G001, S008

S010 · implies

Before

second class:representative=4;carrier candidate=1

After

ordered relation pair present=No;class membership=No

Conditions: none

By[a]={x:aRx},inspect the entire carrier,not a few witnesses or visual grouping.Reflexivity includes the representative itself.

Step identifiers and dependencies

Rule: equivalence_class_every_carrier_element · Uses: G001, S009

S011 · implies

Before

second class:representative=4;carrier candidate=2

After

ordered relation pair present=Yes;class membership=Yes

Conditions: none

By[a]={x:aRx},inspect the entire carrier,not a few witnesses or visual grouping.Reflexivity includes the representative itself.

Step identifiers and dependencies

Rule: equivalence_class_every_carrier_element · Uses: G001, S010

S012 · implies

Before

second class:representative=4;carrier candidate=3

After

ordered relation pair present=Yes;class membership=Yes

Conditions: none

By[a]={x:aRx},inspect the entire carrier,not a few witnesses or visual grouping.Reflexivity includes the representative itself.

Step identifiers and dependencies

Rule: equivalence_class_every_carrier_element · Uses: G001, S011

S013 · implies

Before

second class:representative=4;carrier candidate=4

After

ordered relation pair present=Yes;class membership=Yes

Conditions: none

By[a]={x:aRx},inspect the entire carrier,not a few witnesses or visual grouping.Reflexivity includes the representative itself.

Step identifiers and dependencies

Rule: equivalence_class_every_carrier_element · Uses: G001, S012

S014 · implies

Before

second class:representative=4;carrier candidate=5

After

ordered relation pair present=Yes;class membership=Yes

Conditions: none

By[a]={x:aRx},inspect the entire carrier,not a few witnesses or visual grouping.Reflexivity includes the representative itself.

Step identifiers and dependencies

Rule: equivalence_class_every_carrier_element · Uses: G001, S013

S015 · implies

Before

second class:all carrier labels tested with representative=4

After

complete class in increasing order=[2, 3, 4, 5]

Conditions: none

The entire carrier has been inspected;this list is the representative's full equivalence class,not a local sample.

Step identifiers and dependencies

Rule: class_complete_inventory_not_sample · Uses: G001, S014

S016 · implies

Before

class a=[2, 3, 4, 5];class b=[2, 3, 4, 5];intersection=[2, 3, 4, 5]

After

equal-or-disjoint=Yes;classification=equal

Conditions: none

A common x with aRx and bRx gives aRb by symmetry/transitivity,then representative invariance makes the classes equal.Otherwise the intersection is empty.This uses qualified equivalence axioms and constructs no third class type or quotient operation.

Step identifiers and dependencies

Rule: classes_equal_or_disjoint_full_axiom_reason · Uses: G001, S015

Reverse checks

  • S016 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S015 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S014 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S013 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S012 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S011 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S010 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S009 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S008 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S007 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S006 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S005 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S004 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S003 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S002 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S001 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.

Result

(3, 4, [2, 3, 4, 5], [2, 3, 4, 5], [2, 3, 4, 5], Yes, equal)

The full substitutions and premise checks give the original answer; source identity,format and status are unchanged.

This question review and source binding

Review date: 2026-10-26

Original questions, answers, step expressions, numeric ASTs and historical records are retained. Source candidate labels remain historical and are not overwritten as formal proof.

Source hashes and review receipts
  • input commit: 0f7be61e2c22317a4075561dc822c87d881a50db
  • original question SHA-256: 570e7f38506d5799abb61bd47cd7553178d01417b0431036bb347a439ecda478
  • candidate record SHA-256: ef6c98ee99fae409865a79435a146e570bc2e58ff99e853fc8ec7b251978f05e
  • semantic review receipt SHA-256: e49bf5eaa968c09ebac4ad538ce58251671ed922c957cee1471cfc7b68934bfe
  • question-first witness SHA-256: a7976057c26051fab92342fc95d48af224466c0e1e4ab6ae4c8811c02772e6da
  • Lean: NOT_RUN · human review: NOT_PERFORMED
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