Question: Practice - Chapter 7. Ex 25: If L is any language. Let s(L) be set of all strings made by taking strings in L whose

Practice - Chapter 7. Ex 25:

If L is any language. Let s(L) be set of all strings made by taking strings in L whose length is a multiple of 3 and shrinking it by removing its middle third, that is s(L) = {ab | for some c, |a| = |c| = |b| and abc Practice - Chapter 7. Ex 25: If L is any language. Let L}. Show that if L is a regular language then s(L) is not necessarily regular.

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