关于举行徐啸宇博士（北京大学）学术报告会的通知

报告主题:   Profinite properties of knot groups

报 告 人:   徐啸宇（北京大学）

报告时间：  2025年 11月10日（星期一）下午15:30-17:30

报告地点：  清清文理楼3A02

邀 请 人:   陈麒羽、杜晓明、何遵武、潘会平、孙浩、钟友良

欢迎广大师生前往！

数学学院

2025年11月4日

报告摘要：

Profinite rigidity questions whether certain finitely generated, residually finite groups can be distinguished by their finite quotients. This topic is especially intriguing for groups arising from low-dimensional topology, where rich interconnections between group-theoretic properties and geometric-topological features have been established.

In this talk, I will present some hyperbolic knot (or link) groups that are profinitely rigid within the class of finitely generated 3-manifold groups. Furthermore, I will show that the A-polynomial of prime knots is a profinite invariant, up to a possible mirror image.

报告人介绍：

徐啸宇目前是北京大学的博士生，跟随刘毅研究几何群论与低维拓扑。