Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9497164 | Journal of Pure and Applied Algebra | 2005 | 14 Pages |
Abstract
Let R=k[[x0,â¦,xd]]/(f), where k is a field and f is a non-zero non-unit of the formal power series ring k[[x0,â¦,xd]]. We investigate the question of which rings of this form have bounded Cohen-Macaulay type, that is, have a bound on the multiplicities of the indecomposable maximal Cohen-Macaulay modules. As with finite Cohen-Macaulay type, if the characteristic is different from two, the question reduces to the one-dimensional case: The ring R has bounded Cohen-Macaulay type if and only if Râ
k[[x0,â¦,xd]]/(g+x22+â¯+xd2), where gâk[[x0,x1]] and k[[x0,x1]]/(g) has bounded Cohen-Macaulay type. We determine which rings of the form k[[x0,x1]]/(g) have bounded Cohen-Macaulay type.
Related Topics
Physical Sciences and Engineering
Mathematics
Algebra and Number Theory
Authors
Graham J. Leuschke, Roger Wiegand,