Speaker :
 ChihWhi Chen (National Central University) 
Title :

Learning Seminar on KacMoody Groups: Lie Algebra Homology and Cohomology (II) 
Time :
 20210409 (Fri) 13:00  14:30 
Place : 
Seminar Room 638, Institute of Mathematics (NTU Campus) 
Abstract: 
In this talk, I will introduce the basic theory for Lie algebra (co)homology. We will talk about GarlandLepowsky's generalization of Kostant's nhomology theorem, which gives another proof to the WeylKac character formula. We will also cover decomposition of the BGG category O and some Ext vanishing results. 