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Orlik-Solomon代数与局部系的上同调

Cohomology of the Orlik-Solomon algebras and local systems

A. Libgober, S. Yuzvinsky

摘要:

本文给出了一种组合方法,用以判定复射影平面上直线列补上第一上同调不为零的局部系空间何时有一个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。

英文摘要:

The paper provides a combinatorial method to decide when the space of local systems with non vanishing 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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