Universal Deformation Rings and Tame Blocks
Journal of Algebra
Let k be an algebraically closed field of positive characteristic, and let G be a finite group. Suppose B is a block of kG of infinite tame representation type. We find all finitely generated kG-modules V that belong to B and whose endomorphism ring is isomorphic to k and determine the universal deformation ring R(G,V) for each of these modules.
Bleher, Frauke M., Giovanna Llosent, and Jennifer B. Schaefer. "Universal Deformation Rings and Tame Blocks." Journal of Algebra 412 (2014): 87-106. doi: 10.1016/j.jalgebra.2014.05.002