Explore related knowledge and questions →

Question 910: Empty Domains, Partial Lists, Ties and Local-Only Witnesses Block Different Claims

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

Return to catalogue page 5

← Question derivation index · Original question batch

P1000-0910 · q-20261015-pulse-20261119-r07-0085

Original question and givens

Use mode=local_not_global, complete model={"points":["A","B","C","D"],"values":[20,30,10,40],"edges":[["A","B"]],"candidate":"A"}. Give (mode, candidate, candidate_value, declared_neighbors, neighborhood_local_minimum, global_minimum, boundary).

  • G001 — Use mode=local_not_global, complete model={"points":["A","B","C","D"],"values":[20,30,10,40],"edges":[["A","B"]],"candidate":"A"}. Give (mode, candidate, candidate_value, declared_neighbors, neighborhood_local_minimum, global_minimum, boundary).

Definition and scope

An empty set has no optimizer; an unverified partial list supports no global claim; ties are not unique; a local minimum need not be global.

Step-by-step derivation

S001 · implies

Before

mode=local_not_global

After

identify the exact missing optimization obligation

Conditions: none

Distinguish nonexistence, unverified completeness, nonuniqueness and merely local optimality.

Step identifiers and dependencies

Rule: optimization_scope · Uses: G001

S002 · implies

Before

complete finite objective table

After

[[A, 20], [B, 30], [C, 10], [D, 40]]

Conditions: none

This branch declares the complete domain, licensing pointwise global comparison.

Step identifiers and dependencies

Rule: complete_objective_data · Uses: G001, S001

S003 · calculation

Before

neighbor f(B)−f(A) := sub(30, 20)

After

neighbor f(B)−f(A) = 10

Conditions: none

Check every neighbor for a smaller objective.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S002

S004 · implies

Before

neighbors=[B]; better feasible points=[C]

After

local=true; global=false

Conditions: none

Every neighbor is no better, but a nonneighbor is strictly better, giving an explicit local-but-not-global witness.

Step identifiers and dependencies

Rule: local_global_separation · Uses: G001, S003

Reverse checks

  • S004 · premise_and_result_audit — Completeness, neighborhoods, attainment and uniqueness are separate obligations; local data do not license a global conclusion.
  • S003 · premise_and_result_audit — Recompute neighbor f(B)−f(A) with exact rational arithmetic, not rounded decimals.
  • S002 · premise_and_result_audit — Completeness, neighborhoods, attainment and uniqueness are separate obligations; local data do not license a global conclusion.
  • S001 · premise_and_result_audit — Completeness, neighborhoods, attainment and uniqueness are separate obligations; local data do not license a global conclusion.

Result

(local_not_global, A, 20, [B], Yes, No, local_minimum_does_not_imply_global_minimum)

The full substitutions and premise audits recover the original answer, retaining its field order and verdict meanings.

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: 319699c3cf8520bfcd4434944a125f8280f922e08c29b230311525e4413a4278
  • candidate record SHA-256: 01cf67a06251fab7e7edf69a769bc8680b7af725da88ec0075bcfe11a253065f
  • semantic review receipt SHA-256: 6c2c6d46aded7582a11ac41a8c0b3bdde2669a53bdb6e796eea2039994a02772
  • question-first witness SHA-256: 77e43898df9efdbf8094ad81fe4ab91cf4b4bd82f481eb9b4699b73cb4da612b
  • Lean: NOT_RUN · human review: NOT_PERFORMED
Same-source full JSON