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Article Dans Une Revue Discrete Mathematics and Theoretical Computer Science Année : 2011

Sturmian Sequences and Invertible Substitutions

Résumé

It is known that a Sturmian sequence S can be defined as a coding of the orbit of rho (called the intercept of S) under a rotation of irrational angle alpha (called the slope). On the other hand, a fixed point of an invertible substitution is Sturmian. Naturally, there are two interrelated questions: (1) Given an invertible substitution, we know that its fixed point is Sturmian. What is the slope and intercept? (2) Which kind of Sturmian sequences can be fixed by certain non-trivial invertible substitutions? In this paper we give a unified treatment to the two questions. We remark that though the results are known, our proof is very elementary and concise.
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Dates et versions

hal-00990499 , version 1 (13-05-2014)

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Li Peng, Bo Tan. Sturmian Sequences and Invertible Substitutions. Discrete Mathematics and Theoretical Computer Science, 2011, Vol. 13 no. 2 (2), pp.63--68. ⟨10.46298/dmtcs.554⟩. ⟨hal-00990499⟩

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