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Module 2: Context-free languages and pushdown automata

20252m

Pumping Lemma for CFLs is used to prove a language is

(i) Not Context-Free
(ii) Regular
(iii) Decidable
(iv) Turing recognizable

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PreviousContext-Free Grammars are equivalent to (i) Finite Automata (ii) Turing Machines (iii) Linear Bounded Automata (iv) Pushdown AutomataNextWhich of the following requires context sensitivity? (i) a^n b^n (ii) a^n b^n c^n (iii) (a+b)^* (iv) a^*