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arXiv 2402.04576math.GTmath.GR
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关于复双曲格与严格双曲化的注记

A note on complex hyperbolic lattices and strict hyperbolization

Kejia Zhu

AI总结:

本文研究复双曲流形基本群与严格双曲化空间基本群的关系,证明在n≥2时非均匀格与均匀格均不能作为相应严格双曲化的基本群。

摘要:

我们研究了复双曲流形的基本群与由Charney--Davis和Davis--Januszkiewicz--Weinberger提出的(相对)严格双曲化过程所产生的空间的基本群之间的联系。将$\text{PU}(n,1)$中的非均匀格$\Gamma$按通常方式视为相对于其尖点子群的相对双曲群,我们证明当$n\geq 2$时,$\Gamma$与由相对严格双曲化过程产生的任何相对双曲群都不同构,这一结论基于Lafont--Ruffoni的工作。我们还证明了当$n\geq 2$时,$\text{PU}(n,1)$中的均匀格不是Charney-Davis严格双曲化的基本群,前提是初始复形满足某些温和条件。

英文摘要:

We study the connection between the fundamental groups of complex hyperbolic manifolds and those of spaces arising from the (relative) strict hyperbolization process due to Charney--Davis and Davis--Januszkiewicz--Weinberger. Viewing a non-uniform lattice $Γ$ in $\text{PU}(n,1)$ as a relatively hyperbolic group with respect to its cusp subgroups in the usual way, we show that when $n\geq 2$, $Γ$ is not isomorphic to any relatively hyperbolic group arising from the relative strict hyperbolization process, via work of Lafont--Ruffoni. We also prove that a uniform lattice in $\text{PU}(n,1)$ is not the fundamental group of a Charney-Davis strict hyperbolization when $n\geq 2$, assuming the initial complex satisfies some mild conditions.

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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