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曹锡华数学论坛 -几何和拓扑分论坛
Croke-Kleiner admissible groups: Property (QT) and quasiconvexity
杨文元 副教授(北京国际数学研究中心)
2020年10月17日9:00-10:00  腾讯会议ID:570 925 367

*主持人:邹燕清 青年研究员
*时间:2020年10月17日9:00-10:00
*地点:腾讯会议ID:570 925 367

*讲座内容简介:
Croke-Kleiner admissible groups firstly introduced by Croke-Kleiner belong to a particular class of graph of groups which generalize fundamental groups of 3-dimensional graph manifolds. In this talk, we will present a characterization of strongly quasiconvex subgroups by the finiteness of height. With further assumption on the vertex groups, we show that a CKA group satisfies a property (QT) introduced by Bestvina-Bromberg-Fujiwara that the group admits an equivariant quasi-isometric embedding into a finite product of quasi-trees. This is a joint work with Hoang Nguyen.

*主讲人简介:
杨文元,北京国际数学研究中心副教授,主要研究方向为几何群论和低维拓扑。