Simple D -module components of local cohomology modules

Simple D -module components of local cohomology modules
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局部上同调模的简单 D 模分量

DOI:
10.1016/j.jalgebra.2018.09.005
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发表时间:
2021
期刊:
影响因子:
0.9
通讯作者:
Polini, Claudia
Polini, Claudia
中科院分区:
数学3区
文献类型:
--
作者:
Hartshorne, Robin;Polini, Claudia

文献摘要

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对于特征为零的域上的投射簇V <$Pkn,其中齐次理想I在A= k [x 0,...,xn]中,我们考虑局部上同调模H Ii(A).它们具有A上的完整D-模的结构,我们研究了它们通过简单D-模的滤子。在V是非奇异的情况下,我们可以用V的Betti数完全描述H I i(A)的简单D-模分量。
For a projective variety V⊂ P k n over a field of characteristic zero, with homogeneous ideal I in A= k [x 0,…, x n], we consider the local cohomology modules H I i (A). These have a structure of holonomic D-module over A, and we investigate their filtration by simple D-modules. In case V is nonsingular, we can describe completely the simple D-module components of H I i (A) for all i, in terms of the Betti numbers of V.