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Question 31076: Restriction Can Remove an Original Counterexample

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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R0061-31076 · q-20261012-advance-20261017-r07-counterexample-0051

Original question and givens

The explicit finite domain is Fin(0)=∅ and the complete Boolean predicate table is truth=[] in index order. An outside-domain candidate is not evaluated and is not a counterexample. Empty-domain universal quantification is true; finite enumeration is not an infinite-domain proof. Restrict to subset=[], normalized as a set; proposed witness=0. Give (original failures, retained labels, restricted failures, witness fails in original domain?, witness remains in restricted failures?, restricted universal truth?).

  • G001 — The explicit finite domain is Fin(0)=∅ and the complete Boolean predicate table is truth=[] in index order. An outside-domain candidate is not evaluated and is not a counterexample. Empty-domain universal quantification is true; finite enumeration is not an infinite-domain proof. Restrict to subset=[], normalized as a set; proposed witness=0. Give (original failures, retained labels, restricted failures, witness fails in original domain?, witness remains in restricted failures?, restricted universal truth?).

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

source roles = [qf-density17-counter-restriction-witness, counter-restriction-witness, domain, Fin_predicate_table]

After

derived = [[fail, subset, restricted_fail, original_witness, restricted_witness, restricted_universal]]

Conditions: none

Check THIS source interface:distance uses ONLY its complete coordinate frame;other families use a domain.Discrete operations use local hyphens,legacy banks underscores.Retain family-specific ordered output types and original bilingual data/status.

Step identifiers and dependencies

Rule: R61_SOURCE_exact_keys_operation_domain_OR_frame_and_output_roles · Uses: G001

S002 · implies

Before

source roles = [0, []]

After

derived = [[], [], Yes]

Conditions: none

AFTER traversing the whole GIVEN finite domain,no failures means its universal statement is true,including the empty domain.This assigned finite model does not prove arbitrary infinite statements.

Step identifiers and dependencies

Rule: Counter_COMPLETE_finite_table_failures_EMPTY_universal_true · Uses: G001, S001

S003 · implies

Before

source roles = [0, [], [], 0, []]

After

derived = [[], [], No, No, Yes]

Conditions: none

Validate RAW subset length/types BEFORE set normalization,retaining OLD labels.Original and retained witness flags differ.Deleting False points may make the restricted universal true;outside w never evaluates the predicate.

Step identifiers and dependencies

Rule: Counter_RESTRICTION_set_dedup_OLD_labels_witness_guards_SEPARATE · Uses: G001, S002

Reverse checks

  • S003 · premise_and_result_audit — Reverse-check the ORIGINAL inputs,types and premises;the conclusion need not uniquely recover its premises.This source-bound candidate is not independent review or formal proof.
  • S002 · premise_and_result_audit — Reverse-check the ORIGINAL inputs,types and premises;the conclusion need not uniquely recover its premises.This source-bound candidate is not independent review or formal proof.
  • S001 · premise_and_result_audit — Reverse-check the ORIGINAL inputs,types and premises;the conclusion need not uniquely recover its premises.This source-bound candidate is not independent review or formal proof.

Result

([], [], [], No, No, Yes)

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: be3b0cbbc6652c6c2cfa563b04bd5a5e7c316456dd2fa10eaf4f58b43c7c6425
  • candidate record SHA-256: 78e1fbae0d5d575d6a492e2bed3d7c54e4397964a300e87a4b0df611a2208390
  • semantic review receipt SHA-256: 5403317467ff7c6b74c18ae7211530d0156ebc67d63fc00a3e07b81a201d3d69
  • question-first witness SHA-256: c2b5022aa77f803cd3e1ba9ce162a707da0281aa5bb5289111a97de51fe8c495
  • Lean: NOT_RUN · human review: NOT_PERFORMED
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