Speaker:Han Li 李涵Wesleyan UniversityHan Li's research interest lies in Lie groups, discrete subgroups, dynamics on homogenous spaces and their interactions with number theory and geometry. He received his PhD degree in Mathematics from Yale University in 2014. Prior to joining Wesleyan he spent an academic year as a postdoc at the University of Texas at Austin and MSRI Berkeley.TimeTues. & T...
PrerequisiteBasic algebraic topology and number theoryAbstractI will talk about the basics of cohomology of arithmetic groups focusing on Harder's new book. I will start from simplest cases of the group SL_2 over Z (which covers the chapter 2 and 3 of the book of Harder) and try to be as concrete as possible. The goal is to under these cohomology groups from the point of view of geometry and ar...