This document discusses pushdown automata and how they can accept languages. It covers topics such as acceptance by final state or empty stack, the equivalence of pushdown automata and context-free grammars, and how to construct a pushdown automaton from a grammar that accepts the language by an empty stack.

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Pushdown Automata
Acceptance by Final State
Acceptance by Empty Stack
Languages of PDA

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Pushdown Automata

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Pushdown Automata

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Pushdown Automata

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Pushdown Automata

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Pushdown Automata
From Final State To Empty Stack

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Pushdown Automata
Equivalence of PDA’s and CFG’s

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Pushdown Automata
From Grammars to Pushdown Automata

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Pushdown Automata
PDA P that accepts L(G) by Empty Stack