Speaker：Dr.  Wei Wei

                       Fudan University

Title:  \sigma_2 Yamabe problem on conic 4-sphere

       Time：06  August 2019, 14:30

Location：实验楼108

Abstract: We give a necessary condition for the existence of conic metrics with positive constant $\sigma_2$ curvature on 4-sphere. This is a nonllinear generalization of conic surface theory of Troyanov. Based on the Mass we constrcuted, when singular divisors converges to critical case , we prove that the conic 4-sphere converges to American football in Gromov-Hausdorff topology. 

        联系人：夏超教授