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Pushdown Automata (PDA)

May 25, 2025, 1 min read

tags : Automata Theory

What? §

  • The PDA is an automaton equivalent to the Context Free Grammar (CFG) in language-defining power.
  • Generalization of Finite Automata
  • Think of an ε-NFA with the additional power that it can manipulate a stack. It can use the stack to help choose the next move.

Graph View

Pushdown Automata (PDA)Automata TheoryContext Free Grammar (CFG)Finite AutomataChomsky HierarchyParsers

Backlinks

  • Automata Theory
  • Chomsky Hierarchy
  • Parsers

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