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Questions about ambiguity in context-free grammars.

6 votes
1 answer
837 views

Why is $\{a^n b^m c^p: n\neq m\} \cup \{a^n b^m c^p: m\neq p\}$ an inherently ambiguous lang...

I came across a very hard interview question in last month’s Ph.D. entrance exam. It was asking which one of the languages is inherently ambiguous. Short answer says 2). Why is the language in 2) an i …
Maryam Panahi's user avatar