Michael Sipser Edition 3 Exercise 2 Question 49 (Page No. 159)

Question

We defined the rotational closure of language $A$ to be $RC(A) = \{yx \mid xy \in A\}$.Show that the class of CFLs is closed under rotational closure.

Answer 1

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https://cs.stackexchange.com/questions/7831/easy-proof-for-context-free-languages-being-closed-under-cyclic-shift