Large universal deformation rings
Group Theory
2014-07-15 v2
Abstract
We provide a series of examples of finite groups G and mod p representations V of G whose stable endomorphisms are all given by scalars such that V has a universal deformation ring R(G,V) which is large in the sense that R(G,V)/pR(G,V) is isomorphic to a power series algebra in one variable.
Cite
@article{arxiv.1204.3201,
title = {Large universal deformation rings},
author = {Frauke M. Bleher},
journal= {arXiv preprint arXiv:1204.3201},
year = {2014}
}
Comments
9 pages, 5 figures; for Prop. 2, the description of the groups and the proof have slightly changed