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A graph approach to computing nondeterminacy in substitutional dynamical systems

Published online by Cambridge University Press:  25 September 2007

Toke M. Carlsen  and
Søren Eilers
Toke M. Carlsen
Affiliation:
University of Copenhagen, Universitetsparken 5, 2100 Copenhagen Ø, Denmark; toke@math.ku.dk School of Mathematical & Physical Sciences, Mathemathics Building - V123, University of Newcastle, University Drive, Callaghan NSW 2308, Australia.
Søren Eilers
Affiliation:
University of Copenhagen, Universitetsparken 5, 2100 Copenhagen Ø, Denmark; eilers@math.ku.dk
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Abstract

We present an algorithm which for any aperiodic and primitivesubstitution outputs a finite representation ofeach special word in the shift space associated to that substitution, and determines when suchrepresentations are equivalent under orbit and shift tail equivalence. Thealgorithm has been implemented and applied in the study of certainnew invariants for flow equivalence of substitutional dynamical systems.

Keywords

Sustitutionshift spacesspecial elementsorbit equivalenceshift tail equivalence

Information

Type
Research Article
Information
RAIRO - Theoretical Informatics and Applications , Volume 41 , Issue 3 , July 2007 , pp. 285 - 306
Copyright
© EDP Sciences, 2007

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