Pushdown Automata - Hampden-Sydney College
Pushdown Automata - Hampden-Sydney College
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 />
Short<br />
Example<br />
Proof (⇒).<br />
We are given a CFG G and we will construct a PDA M.<br />
Let M have four states:<br />
Q = {q 0 , q 1 , q 2 , q 3 }.<br />
q 0 is the start state.<br />
q 3 is the accept state.<br />
Assignment
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