We give a necessary condition of degeneration via matrix representations, and consider degenerations of indecomposable Cohen–Macaulay modules over hypersurface singularities of type (A ∞ ). We also provide a method to construct degenerations of finitely generated modules over commutative rings.
- (Maximal) Cohen–Macaulay module
- Countable Cohen–Macaulay representation type
- Degeneration of modules
- Hypersurface singularity of type (A )
- Knörrer's periodicity
ASJC Scopus subject areas
- Algebra and Number Theory