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The Star Problem in Trace Monoids: Reductions Beyond C4

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Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 2076))

Abstract

We deal with the star problem in trace monoids which means to decide whether the iteration of a recognizable trace language is recognizable. We consider trace monoids K n={a 1 b 1}* × … ×{a n b n }*. Our main theorem asserts that the star problem is decidable in a trace monoid M iff it is decidable in the biggest K n submonoid in M. Thus, future research on the star problem can focus on the trace monoids K n. The recently shown decidability equivalence between the star problem and the finite power problem [14] plays a crucial role in the paper.

Partially supported by the PhD program “Specification of discrete processes and systems of processes by operational models and logics” of the DFG.

See author’s homepage for a long version including complete proofs [13].

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Kirsten, D. (2001). The Star Problem in Trace Monoids: Reductions Beyond C4. In: Orejas, F., Spirakis, P.G., van Leeuwen, J. (eds) Automata, Languages and Programming. ICALP 2001. Lecture Notes in Computer Science, vol 2076. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-48224-5_49

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  • DOI: https://doi.org/10.1007/3-540-48224-5_49

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  • Print ISBN: 978-3-540-42287-7

  • Online ISBN: 978-3-540-48224-6

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