Semi-invariant Matrices over Finite Groups |
| |
Authors: | Yuval Ginosar Ofir Schnabel |
| |
Institution: | 1. Department of Mathematics, University of Haifa, Haifa, 31905, Israel
|
| |
Abstract: | The semi-center of an artinian semisimple module-algebra over a finite group G can be described using the projective representations of G. In particular, the semi-center of the endomorphism ring of an irreducible projective representation over an algebraically closed field has a structure of a twisted group algebra. The following group-theoretic result is deduced: the center of a group of central type embeds into the group of its linear characters. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|