8. (15) Let REPEATTM = { <M> | M is a TM, and for all s...

Question

Question

8. (15)

Let REPEATTM = { <M> | M is a TM, and for all s  L(M), s = uv where u = v }. Show that REPEATTM is undecidable. Do not use Rice’s Theorem.

Answer 1

Answer #1

LM> if and only if M does not accepect LM>, exist so REPEATTM is undecidable Given that TM 9 0 prove that REPEATTM Let REPEA

Answer 2

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