Tag
grammar-equivalence
- Oct 19, 2026 Ambiguity, Equivalence, and Other Undecidable Grammar Questions Membership in a context-free language is decidable, but asking whether two grammars denote the same language is not, and neither is asking whether one is ambiguous. computation theory
- Aug 2, 2026 Right-Linear Grammars and the Limits of One-Way Derivation Why a grammar whose rules can only consume input left to right generates exactly the regular languages, and what happens to the language when left-linear rules are mixed in. computation theory