Ward, Thomas
(1998)
*A Family of Markov Shifts (Almost) Classified by Periodic Points.*
Journal of Number Theory, 71 (1).
pp. 1-11.

## Abstract

Let G be a finite group, and let XG = {x = (x(s,t)) Î GZ2 : x(s,t) = x(s,t-1)·x(s+1,t-1)for all (s,t) Î Z2}. The compact zero-dimensional set XG carries a natural shift Z2-action sG and the pair SG = (XG,sG) is a two-dimensional topological Markov shift. Using recent work by Crandall, Dilcher and Pomerance on the Fermat quotient, we show the following: if G is abelian, and the order of G is not divisible by 1024, nor by the square of any Wieferich prime larger than 4×1012, and H is any abelian group for which SG has the same periodic point data as SH, then G is isomorphic to H. This result may be viewed as an example of the ``rigidity'' properties of higher-dimensional Markov shifts with zero entropy.

Item Type: | Article |
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Faculty \ School: | Faculty of Science > School of Mathematics |

Depositing User: | Vishal Gautam |

Date Deposited: | 18 Mar 2011 14:48 |

Last Modified: | 15 Dec 2022 02:01 |

URI: | https://ueaeprints.uea.ac.uk/id/eprint/18604 |

DOI: | 10.1006/jnth.1998.2242 |

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