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Connected Reversible Mealy Automata of Prime Size Cannot Generate Infinite Burnside Groups

Authors Thibault Godin, Ines Klimann

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Thibault Godin
Ines Klimann

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Thibault Godin and Ines Klimann. Connected Reversible Mealy Automata of Prime Size Cannot Generate Infinite Burnside Groups. In 41st International Symposium on Mathematical Foundations of Computer Science (MFCS 2016). Leibniz International Proceedings in Informatics (LIPIcs), Volume 58, pp. 44:1-44:14, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2016) https://doi.org/10.4230/LIPIcs.MFCS.2016.44

Abstract

The simplest example of an infinite Burnside group arises in the class of automaton groups. However there is no known example of such a group generated by a reversible Mealy automaton. It has been proved that, for a connected automaton of size at most 3, or when the automaton is not bireversible, the generated group cannot be Burnside infinite. In this paper, we extend these results to  automata with bigger stateset, proving that, if a connected reversible automaton  has a prime number of states, it cannot generate an infinite Burnside group.

Subject Classification

Keywords
  • Burnside problem
  • automaton groups
  • reversibility
  • orbit trees

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References

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