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arXiv 1208.6324cs.FLmath.GR
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由2字母可逆Mealy自动机生成的群的有限性是可判定的

The finiteness of a group generated by a 2-letter invertible-reversible Mealy automaton is decidable

Ines Klimann

摘要:

证明了由可逆二态Mealy自动机生成的半群是有限的或无秩2的。这一事实导致了由两状态或两字母可逆-可逆Mealy自动机生成的群的有限性的可判定性和由两状态可逆-可逆Mealy自动机生成的半群的自由性的可判定性。

英文摘要:

We prove that a semigroup generated by a reversible two-state Mealy automaton is either finite or free of rank 2. This fact leads to the decidability of finiteness for groups generated by two-state or two-letter invertible-reversible Mealy automata and to the decidability of freeness for semigroups generated by two-state invertible-reversible Mealy automata.

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