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arxiv: 1612.06233 · v1 · pith:PJXLN2IVnew · submitted 2016-12-19 · 💻 cs.FL

Regular Separability of Parikh Automata

classification 💻 cs.FL
keywords regularautomataparikhgivenlanguagelanguagesproblemseparability
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We investigate a subclass of languages recognized by vector addition systems, namely languages of nondeterministic Parikh automata. While the regularity problem (is the language of a given automaton regular?) is undecidable for this model, we show surprising decidability of the regular separability problem: given two Parikh automata, is there a regular language that contains one of them and is disjoint from the other?

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