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Undecidability

The document discusses the concepts of decidability and undecidability in relation to Turing Machines (TMs), categorizing problems into recursive (decidable) and recursively enumerable (RE) languages. It highlights the Halting Problem as an example of an undecidable problem and explains closure properties of recursive and RE languages. The document also touches on the diagonalization technique to illustrate the existence of non-recursively enumerable languages, emphasizing that there are more languages than TMs.

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yashaswinisharma460
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25 views36 pages

Undecidability

The document discusses the concepts of decidability and undecidability in relation to Turing Machines (TMs), categorizing problems into recursive (decidable) and recursively enumerable (RE) languages. It highlights the Halting Problem as an example of an undecidable problem and explains closure properties of recursive and RE languages. The document also touches on the diagonalization technique to illustrate the existence of non-recursively enumerable languages, emphasizing that there are more languages than TMs.

Uploaded by

yashaswinisharma460
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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