Tuesday, May 24, 14:00, 7.527
Andreas Bächle, On the normalizer problem for subgroups.

Abstract:
The 'classical' normalizer problem asks whether a group basis in an integral group ring is fixed only by the obvious units of the group ring, namely products of group elements and central elements of the unit group. In this talk a short overview on the 'classical' normalizer problem will be given and we will take a look at the corresponding question for subgroups of a group basis.