带或不带翻转的区间交换变换的一致完美性
群论
2021-09-17 v2 动力系统
摘要
令 为所有区间交换变换的群。Arnoux-Fathi([Arn81b])、Sah([Sah81])和 Vorobets([Vor17])的结果表明, 由其换位子生成的子群 是单的。在 [Arn81b] 中,Arnoux 证明了所有带翻转的区间交换变换的群 是单的。我们确立 的每个元素的换位子长度不超过 。此外,我们给出了 上保证 元素的换位子长度一致有界的条件,并且在此情况下对于任意 该长度至多为 。由于类似的论证对 中的对合长度也成立,我们添加了一个附录,其目的是证明 的每个元素的对合长度不超过 。
引用
@article{arxiv.1910.08923,
title = {Uniform perfectness for Interval Exchange Transformations with or without Flips},
author = {Nancy Guelman and Isabelle Liousse},
journal= {arXiv preprint arXiv:1910.08923},
year = {2021}
}
备注
Former arXiv:1910.0823 is completed and split as two parts: This one deals with commutator length for groups of IET with or without flips, we removed AIET sections, the title is changed: we replaced "bounded simplicity" by "uniform perfectness". This text will be published in Ann. Inst. Fourier but it also contains an extra appendix on involution length. The second part is arXiv:2109.05706