Given a regular language A, define L2 = { xz | there exists y Σ*, xyz...

Given a regular language A, define L2 = { xz | there exists y Σ*, xyz A, |x|=|z|, |y| = 2 }. Decide with a formal proof if L2 is (a) regular; or (b) not regular but context-free; or (c) not context-free.

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venereology answered 9 months ago

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