Abelian returns in Sturmian words

被引:0
|
作者
Puzynina, Svetlana [1 ,2 ]
Zamboni, Luca Q. [1 ,3 ]
机构
[1] Univ Turku, Turku, Finland
[2] Sobolev Inst Math, Novosibirsk, Russia
[3] Univ Lyon, Lyon, France
来源
ELECTRONIC PROCEEDINGS IN THEORETICAL COMPUTER SCIENCE | 2011年 / 63期
基金
芬兰科学院;
关键词
D O I
10.4204/EPTCS.63.24
中图分类号
TP301 [理论、方法];
学科分类号
081202 ;
摘要
In this paper we study an abelian version of the notion of return word. Our main result is a new characterization of Sturmian words via abelian returns. Namely, we prove that a word is Sturmian if and only if each of its factors has two or three abelian returns. In addition, we describe the structure of abelian returns in Sturmian words, and discuss connections between abelian returns and periodicity.
引用
收藏
页码:179 / 188
页数:10
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