'Blank tape' presentation slideshows

Reductions

Reductions. Problem is reduced to problem. If we can solve problem then we can solve problem. Definition:. Language is reduced to language There is a computable function ( reduction ) such that:. Recall:. Computable function :.

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Reductions

Reductions. Computable function :. There is a deterministic Turing machine. which for any input string computes and writes it on the tape. Problem is reduced to problem. If we can solve problem then we can solve problem. Definition:. Language

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Reducibility

Reducibility. Problem is reduced to problem. If we can solve problem then we can solve problem. Problem is reduced to problem. If is decidable then is decidable. If is undecidable then is undecidable. the halting problem. Example:. is reduced to.

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Reducibility

Reducibility. Problem is reduced to problem. If we can solve problem then we can solve problem. Problem is reduced to problem. If is decidable then is decidable. If is undecidable then is undecidable. Example:. the halting problem. is reduced to.

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Reducibility

Reducibility. Problem is reduced to problem. If we can solve problem then we can solve problem. Problem is reduced to problem. If is decidable then is decidable. If is undecidable then is undecidable. Example:. the halting problem. is reduced to.

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Theory of Computation

Theory of Computation. Lecture 03 Turing Machines. Part of the materials are from Courtesy of Prof. Peter J. Downey Department of Computer Science, University of Arizona. b. The TM Model. current state. 0 1 2 3 ?. Unbounded blank tape. ? ? ?.

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CS21 Decidability and Tractability

CS21 Decidability and Tractability. Lecture 9 January 27, 2014. Outline. Turing Machines and variants multitape TMs nondeterministic TMs Church-Turing Thesis decidable, RE, co-RE languages. Turing Machines. New capabilities: infinite tape can read OR write to tape

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NY A1E Camera my step by step guide for camera and equipment

NY A1E Camera my step by step guide for camera and equipment . HOW TO OPERATE THE CAMERA. Step one: the battery. Attach charged battery onto the back of the camera. (Sliding motion, the arrow points up). 2. 1. STEP TWO: ADD A BLANK TAPE.

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Limits of Algorithmic Computation

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Finite state control with a 4-way read/write head

Finite state control with a 4-way read/write head. 8 8 8. 8. 8. 8. 8. 8. 8. 8. 8 8 8. Figure (a). Figure (b). Homework #3 (Models of Computation, Spring, 2001) Due : Section 1; February 8 (Thursday) Section 2; February 9 (Friday).

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