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Journal de Théorie des Nombres de Bordeaux
Article . 2003 . Peer-reviewed
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zbMATH Open
Article . 2003
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Combinatorial properties of infinite words associated with cut-and-project sequences

Authors: Guimond, Louis-Sébastien; Masáková, Zuzana; Pelantová, Edita;

Combinatorial properties of infinite words associated with cut-and-project sequences

Abstract

The aim of this article is to study certain combinatorial properties of infinite binary and ternary words associated to cut-and-project sequences. We consider here the cut-and-project scheme in two dimensions with general orientation of the projecting subspaces. We prove that a cut-and-project sequence arising in such a setting has always either two or three types of distances between adjacent points. A cut-and-project sequence thus determines in a natural way a symbolic sequence (infinite word) in two or three letters. In fact, these sequences can be constructed also by a coding of a 2 - or 3 -interval exchange transformation. According to the complexity the cut-and-project construction includes words with complexity n + 1 , n + const. and 2 n + 1 . The words on two letter alphabet have complexity n + 1 and thus are Sturmian. The ternary words associated to the cut-and-project sequences have complexity n + const. or 2 n + 1 . A cut-and-project scheme has three parameters, two of them specifying the projection subspaces, the third one determining the cutting strip. We classify the triples that correspond to combinatorially equivalent infinite words.

Keywords

Combinatorics on words, cut-and-project sequences, three-interval exchanges, Sturmian sequences

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
14
Average
Top 10%
Average
gold