Brauer's generalized decomposition numbers and universal deformation rings
Group Theory
2015-02-24 v2
Abstract
The versal deformation ring R(G,V) of a mod p representation V of a profinite group G encodes all isomorphism classes of lifts of V to representations of G over complete local commutative Noetherian rings. We introduce a new technique for determining R(G,V) when G is finite which involves Brauer's generalized decomposition numbers.
Cite
@article{arxiv.1204.0071,
title = {Brauer's generalized decomposition numbers and universal deformation rings},
author = {Frauke M. Bleher},
journal= {arXiv preprint arXiv:1204.0071},
year = {2015}
}
Comments
28 pages, 18 figures