'Tape dtm' presentation slideshows

Lecture 8: Computational Complexity

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Lecture 18 Various TMs

Lecture 18 Various TMs. Allow the head not move. Theorem . If the head is allowed to stay at the cell in each move, then every function computed by the DTM is still Turing-computable. Proof. Consider DTM M=(Q, ? , ? , ? ,s) where ? : Q x ? ? Q x ? x {R, L, H} and H means

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Lecture 1-2 Time and Space of DTM

Lecture 1-2 Time and Space of DTM. Model. Multitape TM with write-only output. Time of DTM. Time Bound. M is said to have a time bound t(n) if for every x with |x| < n, Time M (x) < max {n+1, t(n)}. Theorem.

469 views • 46 slides

Lecture 1-2 Time and Space of DTM

Lecture 1-2 Time and Space of DTM. Model. Multitape TM with write-only output. Time of DTM. Time Bound. M is said to have a time bound t(n) if for every x with |x| < n, Time M (x) < max {n+1, t(n)}. Theorem.

477 views • 46 slides

Lecture 22. Time of DTM

Lecture 22. Time of DTM. Time of DTM. Time M (x) = # of moves that DTM M takes on input x. Time M (x) < infinity iff x ? L(M). Time Bound. M is said to have a time bound t(n) if for every x with |x| < n, Time M (x) < max {n+1, t(n)}. Theorem.

184 views • 7 slides