RAIRO-Theor. Inf. Appl.
Volume 42, Number 4, October-December 2008Fibonacci words
|Page(s)||659 - 662|
|Section||Topical issue: Fibonacci Words|
|Published online||04 January 2008|
A note on univoque self-Sturmian numbers
CNRS, LRI, UMR 8623, Université Paris Sud, Bâtiment 490, 91405 Orsay Cedex, France; email@example.com
Accepted: 22 November 2007
We compare two sets of (infinite) binary sequences whose suffixes satisfy extremal conditions: one occurs when studying iterations of unimodal continuous maps from the unit interval into itself, but it also characterizes univoque real numbers; the other is a disguised version of the set of characteristic Sturmian sequences. As a corollary to our study we obtain that a real number β in (1,2) is univoque and self-Sturmian if and only if the β-expansion of 1 is of the form 1v, where v is a characteristic Sturmian sequence beginning itself in 1.
Mathematics Subject Classification: 11A63 / 68R15
Key words: Sturmian sequences / univoque numbers / self-Sturmian numbers.
© EDP Sciences, 2008
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