Lecture 3
Lecture 3
Lecture 3
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L = {ww R | w ∊ (0+1) * } is not reg<br />
Proof: We need to give EvilOne a string in that<br />
cannot be pumped without leaving the language.<br />
Pumping must occur within p of beginning<br />
So choose s carefully with a beginning portion:<br />
that is clearly identifiable<br />
clearly makes s be of the required form<br />
breaks the defining property when it’s pumped<br />
Friday, February 8, 13
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