Topology Seminar——Low degree cohomologies of congruence groups
报告人：Binyong Sun (Academy of Mathematics and Systems Sciences, Chinese Academy of Sciences)
地点：Room 1114, Sciecnes Building No. 1
Abstract: The cohomology of an aspherical space equals the cohomology of the corresponding fundamental group. For congruence groups such as GL(n, Z), we determine its low degree cohomologies (with complex coefficients). Our method is analytic and representation theoretic. Basic theory of continuous cohomologies, and Franke's filtration of the space of automorphic forms will be reviewed. This is a joint work with Jian-Shu Li.