Rigidity for non-left-orderable group actions on dendrites

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:史恩慧(苏州大学)
:2022-12-21 14:30
:腾讯会议ID:668-393-306(无密码)

报告人:史恩慧(苏州大学)

时  间:1221日下午14:30-16:00

地  点:腾讯会议ID668-393-306(无密码)

内容摘要:

We establish two rigidity theorems for non-left-orderable group actions on dendrites. Explicitly, letting X be a dendrite without infinite order points, we show that if G is a non-virtually-left-orderable small group, then no G-action on X is almost free;  and if G is a higher rank lattice, then every G-action on X is a highly proximal extension of an almost finite action. This is a joint work with Hui Xu.

人简介:

史恩慧, 苏州大学教授,主要研究方向为群作用拓扑动力系统。先后主持多项国家自然科学基金,在TAMS, Israel J. Math., ETDS, GGDJDE, Fund.Math.等杂志上发表多篇研究成果。

 

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