Stable degenerations of Cohen-Macaulay modules
arXiv:1012.4531
Abstract
As a stable analogue of degenerations, we introduce the notion of stable degenerations for Cohen-Macaulay modules over a Gorenstein local algebra. We shall give several necessary and/or sufficient conditions for the stable degeneration. These conditions will be helpful to see when a Cohen-Macaulay module degenerates to another.
29 pages, to appear in Journal of Algebra