Cohomology of the Orlik–Solomon Algebras and Local Systems

Cohomology of the Orlik–Solomon Algebras and Local Systems
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Orlik-Solomon 代数和局部系统的上同调

DOI:
10.1023/a:1001826010964
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发表时间:
1998
影响因子:
1.8
通讯作者:
S. Yuzvinsky
S. Yuzvinsky
中科院分区:
数学1区
文献类型:
--
作者:
A. Libgober;S. Yuzvinsky

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本文提供了一种组合方法来判定复射影平面上直线排列的补上具有非零第一上同调的局部系统空间何时具有正维数子群作为不可约分支。给出了具有这种正维数分量的排列的部分分类以及Orlik-Solomon代数的上同调与局部系统的上同调的比较定理。这些方法是基于广义Cartan矩阵的Vinberg-Kac分类和由上述正维分量定义的代数曲线束的研究。
The paper provides a combinatorial method to decide when the space of local systems with nonvanishing first cohomology on the complement to an arrangement of lines in a complex projective plane has as an irreducible component a subgroup of positive dimension. Partial classification of arrangements having such a component of positive dimension and a comparison theorem for cohomology of Orlik–Solomon algebra and cohomology of local systems are given. The methods are based on Vinberg–Kac classification of generalized Cartan matrices and study of pencils of algebraic curves defined by mentioned positive dimensional components.
局部系统对补空间的刚性
DOI: --
发表时间: 2013
期刊:
影响因子: --
作者:
Kodama;T.;Yoshishige Haraoka
通讯作者: Yoshishige Haraoka