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arXiv 2402.06408math.GTmath.GR
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Anosov子群的Dirichlet域

Dirichlet domains for Anosov subgroups

Ruprecht-Karls Universität Heidelberg(海德堡大学);Max Planck Institute for Mathematics in the Sciences(马克斯·普朗克科学促进研究所数学系)

Colin Davalo, J. Maxwell Riestenberg

AI总结:

本文提出一个有限生成子群Γ在半单李群G中具有有限边Dirichlet域的充分条件,该条件等价于Θ-Anosov条件,并扩展到旗流形上的作用域。

摘要:

我们引入了一个条件,用于判断有限生成子群Γ是否在对称空间G/K上的多面体Finsler度量下具有有限边Dirichlet域。该条件总是意味着对于某些Θ,存在Θ-Anosov条件,并且当G是单利群且Θ是长根或短根集合时,可以等价于Θ-Anosov条件。所获得的Dirichlet域扩展到Γ在不连续域上的基本域。例如,Borel Anosov子群在SL(d,R)上的Hilbert度量下具有有限边Dirichlet域,扩展到线-超平面旗空间;n-Anosov子群在Sp(2n,R)上的Dirichlet-Selberg域在SL(2n,R)/SO(2n)中具有有限边,扩展到由二次曲面界定的射影空间。

英文摘要:

We introduce a sufficient condition for a finitely generated subgroup $Γ$ of a semisimple Lie group $G$ to admit finite-sided Dirichlet domains for polyhedral Finsler metrics on the symmetric space $G/K$. The condition always implies the $Θ$-Anosov condition for some $Θ$, and can be arranged to be equivalent to the $Θ$-Anosov condition when $G$ is simple and $Θ$ is the set of long roots or the set of short roots. The Dirichlet domain we obtain extends to a fundamental domain for the action of $Γ$ on a domain of discontinuity in a flag manifold. For instance, Borel Anosov subgroups of $\mathrm{SL}(d,\mathbb{R})$ have finite-sided Dirichlet domains for the Hilbert metric on the symmetric space which extends to the space of line-hyperplane flags, and $n$-Anosov subgroups of $\mathrm{Sp}(2n,\mathbb{R})$ have finite-sided Dirichlet-Selberg domains in $\mathrm{SL}(2n,\mathbb{R})/\mathrm{SO}(2n)$ which extend to a domain in projective space bounded by quadrics.

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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