Functional stepped surfaces, flips, and generalized substitutions

  • Authors:
  • Pierre Arnoux;Valérie Berthé;Thomas Fernique;Damien Jamet

  • Affiliations:
  • IMLCNRS UMR 6206163, Avenue de Luminy, Case 907, 13288 Marseille, Cedex 09, France;LIRMMUMR 5506Univ. Montpellier II, 161 rue Ada, 34392 Montpellier, Cedex 05, France;LIRMMUMR 5506Univ. Montpellier II, 161 rue Ada, 34392 Montpellier, Cedex 05, France;LORIA - Campus Scientifique - BP 239 - 54506 Vandoeuvre-lès-Nancy Cedex, France

  • Venue:
  • Theoretical Computer Science
  • Year:
  • 2007

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Abstract

A substitution is a non-erasing morphism of the free monoid. The notion of multidimensional substitution of non-constant length acting on multidimensional words is proved to be well-defined on the set of two-dimensional words related to discrete approximations of irrational planes. Such a multidimensional substitution can be associated with any usual unimodular substitution. The aim of this paper is to extend the domain of definition of such multidimensional substitutions to functional stepped surfaces. One central tool for this extension is the notion of flips acting on tilings by lozenges of the plane.