# American Institute of Mathematical Sciences

January  2007, 17(1): 77-93. doi: 10.3934/dcds.2007.17.77

## Topological quasi-group shifts

 1 Centro de Modelamiento Matemático, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla 170/3-Correo 3, Santiago, Chile

Received  October 2005 Revised  April 2006 Published  October 2006

In this work we characterize those shift spaces which can support a 1-block quasi-group operation and show the analogous of Kitchens result: any such shift is conjugated to a product of a full shift with a finite shift. Moreover, we prove that every expansive automorphism on a compact zero-dimensional quasi-group that verifies the medial property, commutativity and has period 2, is isomorphic to the shift map on a product of a finite quasi-group with a full shift.
Citation: Marcelo Sobottka. Topological quasi-group shifts. Discrete and Continuous Dynamical Systems, 2007, 17 (1) : 77-93. doi: 10.3934/dcds.2007.17.77
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