Combinatories of Standard Sturmian Words
Combinatories of Standard Sturmian Words
复制标题
标准 Sturmian 单词的组合
DOI:
10.1007/3-540-63246-8_15
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发表时间:
1997
期刊:
影响因子:
--
通讯作者:
A. Luca
中科院分区:
文献类型:
--
作者:
A. Luca
We overview some recent developments of the theory of Sturmian words showing that the ’kernel’ of the theory is the combinatorics of the setPERof all finite words ω on the alphabetA={a,b}having two periodspandqwhich are coprimes and such that |w|=p+q-2. The elements ofPERhave many surprising structural properties. In particular, the relationStand=A U PER ab, baholds, whereStandis the set of all finite standard Sturmian words. Moreover,PERcan be generated by two different procedures. The first uses the operator of left palindrome closure, whereas the second uses some elementary standard morphisms. We prove the existence of a basic correspondence, that we call standard, between these two methods.