A pumping condition for regular sets.
We prove that a language of a finitely generated free monoid is regular if and only if it satisfies the positive block pumping property. This gives a positive answer to a problem posed by Ehrenfeucht, Parikh and Rozenberg.
| Gepubliceerd in: | SIAM journal on computing. 26, 3 (1997). |
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| Formaat: | Artikel |
| Taal: | English |
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