Gorenstein liaison and ACM sheaves
Gorenstein liaison and ACM sheaves
复制标题
Gorenstein 联络器和 ACM 滑轮
DOI:
10.1515/crll.2005.2005.584.149
复制
发表时间:
2003
期刊:
影响因子:
--
通讯作者:
R. Hartshorne
中科院分区:
文献类型:
--
作者:
M. Casanellas;E. Drozd;R. Hartshorne
Abstract We study Gorenstein liaison of codimension two subschemes of an arithmetically Gorenstein scheme X. Our main result is a criterion for two such subschemes to be in the same Gorenstein liaison class, in terms of the category of ACM sheaves on X. As a consequence we obtain a criterion for X to have the property that every codimension 2 arithmetically Cohen-Macaulay subscheme is in the Gorenstein liaison class of a complete intersection. Using these tools we prove that every arithmetically Gorenstein subscheme of ℙ n is in the Gorenstein liaison class of a complete intersection and we are able to characterize the Gorenstein liaison classes of curves on a nonsingular quadric threefold in ℙ4.
影响因子:
0.9
作者:
A. Duncan
通讯作者:
A. Duncan