How to prove that a language is not context-free?
Posted by Raphael, at cs.stackexchange.com,
We learned about the class of context-free languages $\mathrm{CFL}$. It is characterised by both context-free grammars and…
We learned about the class of context-free languages $\mathrm{CFL}$. It is characterised by both context-free grammars and…
Consider the following problem: given a CNF formula and an assignment that satisfies this formula, is there another satisfying…