CSE322 Recursive and Recursively enumerable sets

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Presentation transcript:

CSE322 Recursive and Recursively enumerable sets Lecture #15

Definitions A procedure for solving a problem is a finite sequence of instructions which can be mechanically carried out given any input. An algorithm is a procedure that terminates after a finite number of steps for any input.

Definitions A set X is recursive if we have an algorithm to determine whether a given element belongs to X or not. A recursively enumerable set is a set X for which we have a procedure to determine whether a given element belongs to X or not. A context sensitive language is recursive

NUMERICAL

SOULTION