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arXiv 2409.20159math.GR
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关于置换圈积的拟等距分类

On the quasi-isometric classification of permutational wreath products

Vincent Dumoncel

AI总结:

本文研究满足非粗分离条件的置换圈积 $F\wr_{H/N}H$,基于 Genevois 与 Tessera 的工作给出其拟等距完整分类,并讨论双 Lipschitz 等价、缩放群及相关 halo 积。

摘要:

在本文中,我们开始研究形如 $F\wr_{H/N}H$ 的置换圈积的大尺度几何,其中 $H$ 是有限展示的,且 $N$ 是 $H$ 的一个正规子群,并满足某种非粗分离假设。主要结果是在 Genevois 和 Tessera 以往工作的基础上,建立了此类置换圈积在拟等距意义下的完整分类。例如,我们证明:对于 $d\ge k\ge 2$,$\mathbb{Z}_{n}\wr_{\mathbb{Z}^{k}}\mathbb{Z}^d$ 与 $\mathbb{Z}_{m}\wr_{\mathbb{Z}^{k}}\mathbb{Z}^d$ 拟等距,当且仅当 $n$ 与 $m$ 是同一个数的幂。我们还讨论了置换圈积之间的双 Lipschitz 等价、它们的缩放群,以及由此类置换点灯人构造的其他 halo 积的拟等距分类。

英文摘要:

In this article, we initiate the study of the large-scale geometry of permutational wreath products of the form $F\wr_{H/N}H$, where $H$ is finitely presented and where $N$ is a normal subgroup of $H$ satisfying a certain assumption of non coarse separation. The main result is a complete classification of such permutational wreath products up to quasi-isometry, building up on previous works from Genevois and Tessera. For instance, we show that, for $d\ge k\ge 2$, $\mathbb{Z}_{n}\wr_{\mathbb{Z}^{k}} \mathbb{Z}^d$ and $\mathbb{Z}_{m}\wr_{\mathbb{Z}^{k}}\mathbb{Z}^d$ are quasi-isometric if and only if $n$ and $m$ are powers of a common number. We also discuss biLipschitz equivalences between permutational wreath products, their scaling groups, as well as the quasi-isometric classification of other halo products built out of such permutational lamplighters.

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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