Question 24785: A Qualified Deterministic Single-Tape Signature Is Not Yet a Global Decider

Original question and givens

Use deterministic single-tape states=[q09, q19, qa9, qr9], input_alphabet=[09], tape_alphabet=[09, X9, _9], blank=_9, start=q09, accept=qa9, reject=qr9, transitions=[[q09, 09, q19, X9, R], [q09, _9, qr9, _9, S], [q19, _9, qa9, _9, L]]. Each transition is [state,read,next,write,L/R/S]; keys [state,read] are unique and halting states have no outgoing transitions. Input symbols form a blank-free tape subset. The integer-indexed tape is blank at every unlisted cell, with configuration [state,head,sparse nonblank tape]; L may move left of0. Canonical answer transitions/tape cells retain the source sort convention. Give (states, input_alphabet, tape_alphabet, blank, start, accept, reject, transitions, qualified, convention).

• G001 — Use deterministic single-tape states=[q09, q19, qa9, qr9], input_alphabet=[09], tape_alphabet=[09, X9, _9], blank=_9, start=q09, accept=qa9, reject=qr9, transitions=[[q09, 09, q19, X9, R], [q09, _9, qr9, _9, S], [q19, _9, qa9, _9, L]]. Each transition is [state,read,next,write,L/R/S]; keys [state,read] are unique and halting states have no outgoing transitions. Input symbols form a blank-free tape subset. The integer-indexed tape is blank at every unlisted cell, with configuration [state,head,sparse nonblank tape]; L may move left of0. Canonical answer transitions/tape cells retain the source sort convention. Give (states, input_alphabet, tape_alphabet, blank, start, accept, reject, transitions, qualified, convention).

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.

• mko-turing-machine-decision-model

Step-by-step derivation

source roles = [tm-signature-qualification]

derived = [[states, input_alphabet, tape_alphabet, blank, start, accept, reject, transitions, qualified, convention]]

source roles = [[q09, q19, qa9, qr9], [09], [09, X9, _9], _9, q09, qa9, qr9, [[q09, 09, q19, X9, R], [q09, _9, qr9, _9, S], [q19, _9, qa9, _9, L]]]

derived = [[q09, q19, qa9, qr9], [09], [09, X9, _9], [[q09, _9, qr9, _9, S], [q09, 09, q19, X9, R], [q19, _9, qa9, _9, L]], Yes]

Reverse checks

• 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

([q09, q19, qa9, qr9], [09], [09, X9, _9], _9, q09, qa9, qr9, [[q09, _9, qr9, _9, S], [q09, 09, q19, X9, R], [q19, _9, qa9, _9, L]], Yes, deterministic_single_tape_signature_with_halting_states_without_outgoing_transitions)

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.