Vanishing theorems for linearly obstructed divisors
Vanishing theorems for linearly obstructed divisors
复制标题
线性阻塞除数的消失定理
DOI:
10.1016/j.jalgebra.2017.01.006
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发表时间:
2017
影响因子:
0.9
通讯作者:
E. Postinghel
中科院分区:
文献类型:
--
作者:
O. Dumitrescu;E. Postinghel
We study divisors on the blow-up of P n at points in general position that are non-special with respect to the notion of linear speciality introduced in [6]. We describe the cohomology groups of their strict transforms via the blow-up of the space along their linear base locus. We extend the result to non-effective divisors that sit in a small region outside the effective cone. As an application, we describe linear systems of divisors in P n blown-up at points in star configuration and their strict transforms via the blow-up of the linear base locus.
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