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复旦大学吕志教授科研报告

 

报告题目On Kosniowski Conjecture

报告人吕志

报告人简介吕志,复旦大学数学科学学院教授,博士生导师,主要从事环面流形和代数拓扑的研究,研究具有群作用的拓扑空间(特别是微分流形)的拓扑几何性质及等变分类问题。

报告内容简介Let M be a unitary closed manifold that admits an action of a circle preserving the unitary structure and fixing some isolated points. Kosniowski conjectured in 1980 that if M is not a boundary, then the number of isolated points is at least [dim M/4]+1. This talk will discuss different statements of Kosniowski conjecture and state some recent progresses.  

报告时间:2018531日下午1600

报告地点:数理化楼A210