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Limbaje Formale, Automate şi Compilatoare

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Proprietăţi de închidere pentru L 3<br />

Fie L, L 1 , L 2 limbaje regulate: există gramaticile G, G 1 , G 2 de tip 3<br />

astfel ca L = L(G), L 1 = L(G 1 ) <strong>şi</strong> L 2 = L(G 2 ).<br />

Atunci, următoarele limbaje sunt de asemenea regulate:<br />

1 L 1 ∪ L 2<br />

2 L 1 · L 2<br />

3 L ∗<br />

4 L R<br />

5 L 1 ∩ L 2<br />

6 L 1 \ L 2<br />

LFAC (2014-15) Curs 2 3 / 26

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