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R0009-05441 · q-20261008-advance-20261012-r01-mathematical-induction-0066
N is indexed from 0; this is an explicitly finite induction protocol, not a universal proof. Required initial value s=1, increment d=-1; candidate c(k)=(2)k+(17), n=3. Give signed integers (c(0)−s, c(n+1)−c(n)−d).
G001 — N is indexed from 0; this is an explicitly finite induction protocol, not a universal proof. Required initial value s=1, increment d=-1; candidate c(k)=(2)k+(17), n=3. Give signed integers (c(0)−s, c(n+1)−c(n)−d).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.
Before
natural indices start at0;finite induction protocol
After
index bookkeeping and finite values are not proofs of all P(n)
Conditions: none
Natural indices do not require nonnegative sequence values.Checking a finite range or a successor index does not supply proposition truth or an induction proof over all naturals.
Rule: finite_induction_claim_boundary · Uses: G001
Before
successor target index := sum(3, 1)
After
successor target index = 4
Conditions: none
Add1 to the current natural index to obtain the successor target.
Rule: exact_rational_arithmetic · Uses: G001, S001
Before
candidate c(0) product := mul(2, 0)
After
candidate c(0) product = 0
Conditions: none
Substitute the specified index into the candidate affine product term.
Rule: exact_rational_arithmetic · Uses: G001, S002
Before
candidate c(0) value := sum(0, 17)
After
candidate c(0) value = 17
Conditions: none
Then add the candidate constant b.
Rule: exact_rational_arithmetic · Uses: G001, S003
Before
candidate c(3) product := mul(2, 3)
After
candidate c(3) product = 6
Conditions: none
Substitute the specified index into the candidate affine product term.
Rule: exact_rational_arithmetic · Uses: G001, S004
Before
candidate c(3) value := sum(6, 17)
After
candidate c(3) value = 23
Conditions: none
Then add the candidate constant b.
Rule: exact_rational_arithmetic · Uses: G001, S005
Before
candidate c(4) product := mul(2, 4)
After
candidate c(4) product = 8
Conditions: none
Substitute the specified index into the candidate affine product term.
Rule: exact_rational_arithmetic · Uses: G001, S006
Before
candidate c(4) value := sum(8, 17)
After
candidate c(4) value = 25
Conditions: none
Then add the candidate constant b.
Rule: exact_rational_arithmetic · Uses: G001, S007
Before
candidate base defect := sub(17, 1)
After
candidate base defect = 16
Conditions: none
The base defect is c(0)−s,distinct from the step defect.
Rule: exact_rational_arithmetic · Uses: G001, S008
Before
candidate adjacent difference := sub(25, 23)
After
candidate adjacent difference = 2
Conditions: none
First subtract adjacent candidate values c(n+1)−c(n).
Rule: exact_rational_arithmetic · Uses: G001, S009
Before
candidate step defect := sub(2, -1)
After
candidate step defect = 3
Conditions: none
Then subtract the required increment d,retaining the signed defect.
Rule: exact_rational_arithmetic · Uses: G001, S010
Before
c(k)=2k+17;specified n=3
After
base defect=16;step defect=3
Conditions: none
Report the specified substitutions.A separate symbolic identity gives base b−s and step a−d for this affine model;that differs from extrapolating a general proposition from finitely many samples.
Rule: affine_candidate_base_step_separation · Uses: G001, S011
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 — Recompute candidate step defect with exact rational arithmetic, not rounded decimals.S010 · premise_and_result_audit — Recompute candidate adjacent difference with exact rational arithmetic, not rounded decimals.S009 · premise_and_result_audit — Recompute candidate base defect with exact rational arithmetic, not rounded decimals.S008 · premise_and_result_audit — Recompute candidate c(4) value with exact rational arithmetic, not rounded decimals.S007 · premise_and_result_audit — Recompute candidate c(4) product with exact rational arithmetic, not rounded decimals.S006 · premise_and_result_audit — Recompute candidate c(3) value with exact rational arithmetic, not rounded decimals.S005 · premise_and_result_audit — Recompute candidate c(3) product with exact rational arithmetic, not rounded decimals.S004 · premise_and_result_audit — Recompute candidate c(0) value with exact rational arithmetic, not rounded decimals.S003 · premise_and_result_audit — Recompute candidate c(0) product with exact rational arithmetic, not rounded decimals.S002 · premise_and_result_audit — Recompute successor target index 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.(16, 3)
The full substitutions and premise checks give the original answer; source identity,format and status are unchanged.
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.
input commit: 0f7be61e2c22317a4075561dc822c87d881a50dboriginal question SHA-256: 9287482560a088938ccf89989d70ec8711722f80b7528b0ade3754aea783a06fcandidate record SHA-256: 28978154bc017aa7898e9d528c1b512b29d7777551f5c34465b0aa62438b8f17semantic review receipt SHA-256: 71e7db519df31f3a164533e472e293cb64f001b475a8d002b4a5c2740a237b56question-first witness SHA-256: 5a43f4f81b6256281f8d139a4010bbde127be803c528e5878857269c8f854462Lean: NOT_RUN · human review: NOT_PERFORMED