学术报告(周青山 11.20)

Uniformizing Gromov hyperbolic spaces and Busemann functions

发布人:杨晓静 发布日期:2020-10-27
主题
Uniformizing Gromov hyperbolic spaces and Busemann functions
活动时间
-
活动地址
平台:腾讯会议 收听账号及密码:64426189037
主讲人
周青山 讲师 佛山科学技术学院
主持人
黄显涛

摘要:I

n this lecture series, I will introduce the connection between Gromov hyperbolic category and uniform space category.

We will start with Gromov hyperbolic geometry and then introduce a conformal density via Busemann function, from which one can obtain a uniformization theorem for Gromov hyperbolic spaces. This generalizes the work of Bonk,Heinonen and Koskela.

Then we introduce Gromov hyperbolization of metric spaces. We will focus on hyperbolic fillings of compact spaces and hyperbolic type metrics defined on non-complete spaces.

 

The second half of the series will show that there is a one-to-one correspondence between

the quasi-isometry classes of proper geodesic Gromov hyperbolic spaces that are roughly starlike with respect to the points at the boundaries of infinity and the quasi-similarity classes of unbounded locally compact uniform spaces. We will explain its relations to Teichmuller displacement theorem, Heinonen-Nakki-Vaisala theorem, QS/QC structure from local to global.