On the number of indecomposable totally reflexive modules
arXiv:math/0607315
Abstract
In this note, it is proved that over a commutative noetherian henselian non-Gorenstein local ring there are infinitely many isomorphism classes of indecomposable totally reflexive modules, if there is a nonfree cyclic totally reflexive module.
6 pages, minor changes, to appear in Bull. London Math. Soc