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Deterministic Finite Automata (DFA) Nondeterministic Finite Automata

Deterministic Finite Automata (DFA) Nondeterministic Finite Automata

Deterministic Finite Automata (DFA) Nondeterministic Finite Automata

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The language of a <strong>DFA</strong><br />

Def: The language<br />

of a a <strong>DFA</strong><br />

def<br />

is<br />

Def: If<br />

The language thus is the set of strings that drive<br />

the initial state to some accepting state.<br />

from<br />

for some <strong>DFA</strong> then we call a regular language.<br />

The regular languages are exactly those languages 6which are<br />

definable by <strong>DFA</strong>s in the sense that for some <strong>DFA</strong> A.<br />

02140 Languages and Parsing, MF, Fall 2004 – p.15/22<br />

<strong>Finite</strong> <strong>Automata</strong><br />

The nondeterministic variant: NFAs<br />

02140 Languages and Parsing, MF, Fall 2004 – p.16/22

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