Pushdown Automata - Hampden-Sydney College
Pushdown Automata - Hampden-Sydney College
Pushdown Automata - Hampden-Sydney College
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The Grammar Rules<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 />
Short<br />
Example<br />
Proof (⇐).<br />
There are two possibilities in going from p to q.<br />
The first symbol pushed does not match the last symbol<br />
popped.<br />
The first symbol pushed matches the last symbol<br />
popped.<br />
Assignment