GENERAL SEMINAR

“Group Rings Which Are Direct Products of Division Rings”

by

Prof. Falko Lorenz 

(University of Muenster, Germany)

ABSTRACT: Arithmetical investigations led me to ask: For which finite groups G is the group ring of G over a field K isomorphic to a direct product of division rings? There is a complete group-theoretical answer to this question, having been worked out in collaboration with B. Huppert. But ultimately it leads to a delicate number-theoretical problem of elementary character.

Date : September 27, 2006 (Wednesday)

Time : 15.40

Place: Mathematics Seminar Room SA141

Tea will be served before the seminar.