Local cohomology, arrangements of subspaces and monomial ideals

Local cohomology, arrangements of subspaces and monomial ideals
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局部上同调、子空间排列和单项式理想

DOI:
10.1016/s0001-8708(02)00050-6
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发表时间:
2000
影响因子:
1.7
通讯作者:
S. Zarzuela
S. Zarzuela
中科院分区:
数学1区
文献类型:
--
作者:
Josep Àlvarez Montaner;Ricardo García López;S. Zarzuela

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设ank表示域k上n维的仿射空间,设XCA n k是线性子变种的排列。设R¼k½x1, y, xn,设ICR表示一个定义x的理想。本文研究了局部上同模Hi I ðRÞ:¼indlimj Exti R´R/Ij, RÞ,特别考虑了理想I是由单项式生成的情况。
Let An k denote the affine space of dimension n over a field k, let XCA n k be an arrangement of linear subvarieties. Set R ¼ k½x1, y, xn and let ICR denote an ideal which defines X. In this paper we study the local cohomology modules Hi I ðRÞ: ¼ indlimj Exti RðR/Ij, RÞ, with special regard of the case where the ideal I is generated by monomials.