微分几何讨论班（2025秋第8讲）
Geometric structure and existence of reducible spherical conical metrics
魏志强 教授
（河南大学）
时间：2026年1月8日 10:05-11:05
地点：沙河主E806
摘要：In this talk, we show that on any compact Riemann surface, a reducible spherical conical metric can be partitioned into finitely many pieces by cutting along suitable geodesics, each of which is isometric to a football. As an application, we provide a new proof of the angle constraint for such metrics. This is joint work with Professors Yingyi Wu and Bin Xu.
报告人简介：魏志强，河南大学副教授，2018年博士毕业于中国科学院大学，研究方向是子流形的几何和特殊度量的存在性，在Math. Ann、JGA、Algebr. Geom. Topo.等国际知名期刊上发表论文多篇。
邀请人：谢振肖、张世金
