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### How to prove this language is not context-free language by pumping lemma? [duplicate]

Could I get help to prove that the language $\{a^i b^j c^k \mid i>j>k\ge 0\}$ is not context free language by using pumping lemma?
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### Is there any tiny tips to find counter example string for proving some language is not a CFL? [duplicate]

When I prove some language is context free, It is too hard to find example string. Is there any tips? It takes too many time or eventually give up.
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### Pumping Lemma for CFG - How to do it? [duplicate]

I'm literally so confused on how to even start this problem of proving that the given language is not Context Free. L = {a^i b^j c^k d^l | i = k and j = l} I ...
14 views

### Having trouble understanding how to prove a language context free? [duplicate]

I've been studying the theory of automata. I came across this problem in the book and unable to understand how to solve this. I've solved some examples using the Pumping lemma but this one uses ...