An explicit study of l–sequences

Rank One Maximal Cohen-Macaulay Modules Over Singularities of Type Y 1 3 + Y 2 3 + Y 3 3 + Y 4 3

“…A different approach was used by Cipu, Herzog and Popescu in [7] to describe generalized Cohen-Macaulay modules (see also [5] or [8]). A powerful method seems to be also the lifting theory in the sense of Auslander-Ding-Solberg [2], which was used in [18] in order to complete Knörrer Periodicity Theorem [15] in char p > 0 (see also [19], [6]).…”