Question 1.46: Prove that the following languages are not regular. You may ...
Prove that the following languages are not regular. You may use the pumping lemma and the closure of the class of regular languages under union, intersection, and complement.
a. \left\{0^{n} 1^{m} 0^{n} \mid m, n \geq 0\right\}
{ } ^{A} b. \left\{0^{m} 1^{n} \mid m \neq n\right\}
c. \left\{w \mid w \in\{0,1\}^{+} \text {is not a palindrome }\right\}^{8}
{ }^{*} \mathrm{~d} . \quad\left\{w t w \mid w, t \in\{0,1\}^{*}\right\}
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