Sturm数与3iet字的替换不变性
Sturm numbers and substitution invariance of 3iet words
摘要:
本文给出了由三个区间上的非退化区间交换定义的无限字(3iet字)为替换不变的一个必要条件:与这个字相联系的一个自然参数必须是Sturm数.我们从这个条件推出一些代数后果有关的关联矩阵的相关替代。作为我们的证明的副产品,我们给3iet字的组合特征。
英文摘要:
In this paper, we give a necessary condition for an infinite word defined by a non-degenerate interval exchange on three intervals (3iet word) to be invariant by a substitution: a natural parameter associated to this word must be a Sturm number. We deduce some algebraic consequences from this condition concerning the incidence matrix of the associated substitution. As a by-product of our proof, we give a combinatorial characterization of 3iet words.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。