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Question 5673: Finite Predicate Extension and Aligned Truths

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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← Question derivation index · Original question batch

R0010-05673 · q-20261008-advance-20261012-r04-set-membership-0098

Original question and givens

Finite integer set U=[-22, -1, 0, 1, 22]; P(x) means x=22. Normalize U increasingly, then give (complete satisfying extension A, truth list aligned to sorted U).

  • G001 — Finite integer set U=[-22, -1, 0, 1, 22]; P(x) means x=22. Normalize U increasingly, then give (complete satisfying extension A, truth list aligned to sorted U).

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

declared finite type or bounded integer universe

After

membership truth is distinct from eligibility to ask the question

Conditions: none

Being outside the type is not the same as false membership.Check only the declared finite type or integer set,not all set theory or unrestricted comprehension.

Step identifiers and dependencies

Rule: finite_membership_scope · Uses: G001

S002 · calculation

Before

predicate difference at-22 := sub(-22, 22)

After

predicate difference at-22 = -44

Conditions: none

Compute x minus the parameter as an exact integer comparison witness.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S001

S003 · implies

Before

x=-22;predicate=eq 22

After

False

Conditions: none

Evaluate every element in normalized U order;predicate success does not expand U.

Step identifiers and dependencies

Rule: finite_membership_predicate_row · Uses: G001, S002

S004 · calculation

Before

predicate difference at-1 := sub(-1, 22)

After

predicate difference at-1 = -23

Conditions: none

Compute x minus the parameter as an exact integer comparison witness.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S003

S005 · implies

Before

x=-1;predicate=eq 22

After

False

Conditions: none

Evaluate every element in normalized U order;predicate success does not expand U.

Step identifiers and dependencies

Rule: finite_membership_predicate_row · Uses: G001, S004

S006 · calculation

Before

predicate difference at0 := sub(0, 22)

After

predicate difference at0 = -22

Conditions: none

Compute x minus the parameter as an exact integer comparison witness.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S005

S007 · implies

Before

x=0;predicate=eq 22

After

False

Conditions: none

Evaluate every element in normalized U order;predicate success does not expand U.

Step identifiers and dependencies

Rule: finite_membership_predicate_row · Uses: G001, S006

S008 · calculation

Before

predicate difference at1 := sub(1, 22)

After

predicate difference at1 = -21

Conditions: none

Compute x minus the parameter as an exact integer comparison witness.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S007

S009 · implies

Before

x=1;predicate=eq 22

After

False

Conditions: none

Evaluate every element in normalized U order;predicate success does not expand U.

Step identifiers and dependencies

Rule: finite_membership_predicate_row · Uses: G001, S008

S010 · calculation

Before

predicate difference at22 := sub(22, 22)

After

predicate difference at22 = 0

Conditions: none

Compute x minus the parameter as an exact integer comparison witness.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S009

S011 · implies

Before

x=22;predicate=eq 22

After

True

Conditions: none

Evaluate every element in normalized U order;predicate success does not expand U.

Step identifiers and dependencies

Rule: finite_membership_predicate_row · Uses: G001, S010

S012 · implies

Before

normalized U=[-22, -1, 0, 1, 22];truths=[False, False, False, False, True]

After

A={x∈U:P(x)}=[22]

Conditions: none

The full extension contains exactly the successful elements of the supplied U;the truth list remains aligned with all sorted U-elements.Empty U gives two empty lists.

Step identifiers and dependencies

Rule: bounded_predicate_extension · Uses: G001, S011

Reverse checks

  • 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 — Recompute predicate difference at22 with exact rational arithmetic, not rounded decimals.
  • 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 — Recompute predicate difference at1 with exact rational arithmetic, not rounded decimals.
  • 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 — Recompute predicate difference at0 with exact rational arithmetic, not rounded decimals.
  • 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 — Recompute predicate difference at-1 with exact rational arithmetic, not rounded decimals.
  • 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 — Recompute predicate difference at-22 with exact rational arithmetic, not rounded decimals.
  • S001 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.

Result

([22], [False, False, False, False, True])

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: 72cb63877fe3d79e090ca0f2f48622b0d62e0b7b6f673afd53f06c7956171395
  • candidate record SHA-256: e69c754d7346fbc2ff34518608ddd0c9ab5c7efb462fa741212ea367e33ee487
  • semantic review receipt SHA-256: 0328166a2e335aac7a5fb34556e68c80ba7d16612e822b3999c8ac348a9ca06f
  • question-first witness SHA-256: 0da18e4e6cf71ece5ec5f00dd0cd161217b6d251672bc0b46d79fe7e6253f5fc
  • Lean: NOT_RUN · human review: NOT_PERFORMED
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