报告人：王志超（复旦大学）

时间：2023年11月14日（星期二）上午10:30-11:30 

地点：海纳苑2幢202

摘要：In this talk, we show that in the three dimensional sphere with a bumpy metric or a metric with positive Ricci curvature, there exist at least four distinct embedded minimal two-spheres. This confirms a conjecture of S. T. Yau in 1982 for bumpy metrics and metrics with positive Ricci curvature. The proof relies on a multiplicity one theorem for the Simon-Smith min-max theory. This is a joint work with Xin Zhou.

联系人：江文帅老师（wsjiang@zju.edu.cn)