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Pushdown Automata - Hampden-Sydney College

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Equivalence of PDAs and CFGs<br />

<strong>Pushdown</strong><br />

<strong>Automata</strong> -<br />

Equivalence<br />

to CFGs<br />

Robb T.<br />

Koether<br />

Homework<br />

Review<br />

Equivalence<br />

of PDAs and<br />

CFGs<br />

Proof ⇒<br />

Proof ⇐<br />

Long Example<br />

Theorem (Equivalence of PDAs and CFGs)<br />

A language is context-free if and only if it is accepted by<br />

some PDA.<br />

Short<br />

Example<br />

Assignment

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