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arXiv 2402.07015math.DS
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通过 Thue-Morse 序列走向符号动力学

To Symbolic Dynamics Through The Thue-Morse Sequence

Diyath Pannipitiya

AI总结:

本文基于著名的 Thue-Morse 序列,引入两个三字母无平方序列,并提出一种显式方法构造无穷多个在移位映射下轨道闭包极小、不可数且互不相交的回复点。

摘要:

著名的 Thue-Morse 序列,或称 Prouhet-Thue-Morse 序列(OEIS 中的 A010060),具有许多有趣的性质,并且是许多(反)例的丰富来源。我们引入了两个不同的三字母无平方序列,其中之一(至多相差字母置换)等价于 Thue 最初的三字母无平方序列。随后,我们利用它们引入一种显式方法,以构造出无穷多个 ${\{0,1\}^{\mathbb{N}}}$ 中的回复点,这些点在移位映射下的轨道闭包是极小的、不可数的,并且对于任意两个不同的此类点,它们的轨道闭包是互不相交的。

英文摘要:

The celebrated Thue-Morse sequence, or the Prouhet-Thue-Morse sequence (A010060 in the OEIS), has a number of interesting properties and is a rich source to many (counter)examples. We introduce two different square-free sequences on three letters with one of them is equivalent (up-to permutations of letters) to Thue's original square-free sequence on three letters. Then we use them to introduce an explicit method to construct infinitely many number of recurrent points in ${\{0,1\}^{\mathbb{N}}}$ whose orbit closures under the shift map is minimal, uncountable, and for any two distinct such points their orbit closures are disjoint.

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。

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