Programm des Emmy-Noether-Seminars
Fri, 09.12.2016, 14:30
Fri, 09.12.2016, 15:30
On the tree and the homology of SL_2 on polynomial rings
Speaker: Prof. Dr. Fabien Morel (LMU München)
In this talk I will give some new results on the mod \ell homology of the group SL_2(A) when A is a polynomial ring in n variables with coefficients in a field of characteristic not \ell. The method emphasizes a new interpretation of the tree of SL_2 over the fraction field K of A and its discrete valuation at infinity in terms of reflexive sheaves of rank 2 on P^n .