-adic characterization of minimal ternary dendric shifts

Author:

GHEERAERT FRANCE,LEJEUNE MARIE,LEROY JULIENORCID

Abstract

Abstract Dendric shifts are defined by combinatorial restrictions of the extensions of the words in their languages. This family generalizes well-known families of shifts such as Sturmian shifts, Arnoux–Rauzy shifts and codings of interval exchange transformations. It is known that any minimal dendric shift has a primitive $\mathcal {S}$ -adic representation where the morphisms in $\mathcal {S}$ are positive tame automorphisms of the free group generated by the alphabet. In this paper, we investigate those $\mathcal {S}$ -adic representations, heading towards an $\mathcal {S}$ -adic characterization of this family. We obtain such a characterization in the ternary case, involving a directed graph with two vertices.

Publisher

Cambridge University Press (CUP)

Subject

Applied Mathematics,General Mathematics

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