Prove that the language {anb3nan | n ≥ 1} is not context-free.
use the pumping lemma for context free languages to prove the language is not context free. B = {w#t | w is a substring of t, where wit e {a,b}*}. Hint: consider s = apbº#apba.
Is the following language context free or not? (prove / disprove using pumping lemma for CFL ) L = {0n 1 0n | n >= 1}
5.) Is the following language context free or not? (prove / disprove using pumping lemma for CFL ) L = {0n 1 0n | n >= 1}
1. Îs the language Li = {aPble" | p,q,r > 1 and r = pg) a context-free language? Prove your answer. 1. Îs the language Li = {aPble" | p,q,r > 1 and r = pg) a context-free language? Prove your answer.
5. Is the following language A context-free? You either show that A is context-free by giving a context-free grammar for A, or prove that A is not context-free language using the context-free language pumping lemma
Theory of Computation - Non Context Free Languages Use the Context-Free Pumping Lemma to prove that the following language is NOT context-free:
Construct a context-free grammar for the language L={ ab^n ab^n a | n> 1}.
determine if the language is regular, context-free, Turing-decidable, or undecidable. For languages that are regular, give a DFA that accepts the language, a regular expression that generates the language, and a maximal list of strings that are pairwise distinguishable with respect to the language. For languages that are context-free but not regular, prove that the language is not regular and either give a context- free grammar that generates the language or a pushdown automaton that accepts the language. You need...
Give a context free grammar for the language L where L = {a"bam I n>:O and there exists k>-o such that m=2"k+n) 3. Give a nondeterministic pushdown automata that recognizes the set of strings in L from question 3 above. Acceptance should be by accept state. 4. 5 Give a context-free grammar for the set (abc il j or j -k) ie, the set of strings of a's followed by b's followed by c's, such that there are either a...
determine if the language is regular, context-free, Turing-decidable, or undecidable. For languages that are regular, give a DFA that accepts the language, a regular expression that generates the language, and a maximal list of strings that arc pairwise distinguishable with respect to the language. For languages that are context-free but not regular, prove that the language is not regular and either give a context- free grammar that generates the language or a pushdown automaton that accepts the language. You need...