Speaker:    Wanyuan Xu (Shanghai Normal University)

Time:         01.03.2019, 13:00--14:00

Place:        Room 402, Mathematical Building

Abstract:   Let X be a surface of degree n, which is considered as a branch cover of CP^2 with respect to a generic projection. The surface X has a natural Galois cover with Galois group S_n. In this talk, we will use Moishezon-Teicher’s method to compute the fundamental group of the Galois cover of certain algebraic surfaces that can degenerate to a union of n projective planes such that no three planes meet in a line. This is joint work with M. Amram, C. Gong, M. Teicher and S.-L. Tan.