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Questions about normal forms in various contexts, for example normal forms of context-free grammars (Chomsky normal form, Greibach normal form), of formulas (conjunctive normal form, disjunctive normal form), and others.

6 votes

The importance of normal forms like Chomsky normal form for CFGs

Sheila Greibach invented the Greibach normal form to prove that every CFG can be recognized by a PDA that works in real time (i.e., without $\epsilon$-transitions).
Dominik D. Freydenberger's user avatar