We say that a Turing machine is verbose on sif, at the completion of its computation on s, it leaves at least as many non-blank characters on the left of the tape as shastotal characters. Let VERBOSETM= { | M is a TM and is verbose on s}. Show that VERBOSETMis undecidable by reduction from ATM. Do not use Rice’s theorem.
We say that a Turing machine is verbose on sif, at the completion of its computation on s, it leaves at least as many non-blank characters on the left of the tape as shastotal characters. Let VERBOSETM= { | M is a TM and is verbose on s}. Show that VERBOSETMis undecidable by reduction from ATM. Do not use Rice’s theorem.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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We say that a Turing machine is verbose on sif, at the completion of its computation on s, it leaves at least as many non-blank characters on the left of the tape as shastotal characters.
Let VERBOSETM= { <M, s> | M is a TM and is verbose on s}.
Show that VERBOSETMis undecidable by reduction from ATM. Do not use Rice’s theorem.
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