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Erschienen in:
2022 | OriginalPaper | Buchkapitel
Pushdown Automata and Context-Free Grammars
verfasst von : Alberto Pettorossi
Erschienen in: Automata Theory and Formal Languages
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In this chapter we study the class of pushdown automata and their relation to the class of context-free grammars and languages. We also consider various transformations and simplifications of context-free grammars and we show how to derive the Chomsky normal form and the Greibach normal form of context-free grammars. We then study some fundamental properties of context-free languages and we present a few basic decidability and undecidability results. We also consider the deterministic pushdown automata and the deterministic context-free languages and we present two parsing algorithms for context-free languages.