A twisted tensor product on symbolic dynamical systems and the Ashley's problem

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May 2003, 9(3): 549-558. doi: 10.3934/dcds.2003.9.549

A twisted tensor product on symbolic dynamical systems and the Ashley's problem

H. M. Hastings ^1, , S. Silberger ^1, , M. T. Weiss ^1, and Y. Wu ^1,

1.	Department of Mathematics, Hofstra University, Hempstead, NY 11550, United States, United States, United States, United States

Received February 2002 Revised November 2002 Published February 2003

Abstract
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We define the notion of fiber bundle via a twisted tensor product on the transition matrices. We define the notion of topological conjugacy and shift equivalence in this bundle context and show that topological conjugacy implies shift equivalence. We show that the "Ashley system" $\Sigma_A$ fits into our fiber bundle context. We introduce another system $\Sigma_W$, topologically conjugate to the full $2-$shift, which has the same base space and fiber as the Ashley system, but is constructed with a different twisting. We show that $\Sigma_A$ and $\Sigma_W$ are shift equivalent but not bundle isomorphic.

Keywords: Symbolic dynamics, shift equivalence, topological conjugacy, Ashley’s problem..

Mathematics Subject Classification: Primary: 37B10, 37C1.

Citation: H. M. Hastings, S. Silberger, M. T. Weiss, Y. Wu. A twisted tensor product on symbolic dynamical systems and the Ashley's problem. Discrete & Continuous Dynamical Systems - A, 2003, 9 (3) : 549-558. doi: 10.3934/dcds.2003.9.549

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