Given a TM, T 1 , and any string w, there is clearly a TM, T 2

Question:

Given a TM, T₁, and any string w, there is clearly a TM, T₂, that first screens its input to see whether it is the particular string w; if it is not the input is accepted, if it is w, then T₁ is run on the input w. Pictorially,

Show that there is no decision procedure to determine whether any given TM (say T₂) accepts all strings or not.

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Introduction To Computer Theory

ISBN: 9780471137726

2nd Edition

Authors: Daniel I. A. Cohen

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Question Posted: Sep 05, 2022 02:32 AM

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Given a TM, T 1 , and any string w, there is clearly a TM, T 2

Question:

Input T2 Is it w? Yes 2 No Run T₁ HALT

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There is no decision procedure to determine whether any g...View the full answer

Introduction To Computer Theory

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