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arXiv 1002.2038math.AGmath.COmath.GT
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超平面排列的极小性与局部系统上同调基

Minimality of hyperplane arrangements and basis of local system cohomology

Masahiko Yoshinaga

摘要:

本文的目的是将超平面排列的极小性应用于局部系上同调群。众所周知,在一般秩为1的局部系统中,系数为1的扭曲上同调群除了在最高次之外都为零,并且有界腔室形成剩余的上同调群的基。对于二维排列,我们精确地确定了这种现象何时发生。

英文摘要:

The purpose of this paper is applying minimality of hyperplane arrangements to local system cohomology groups. It is well known that twisted cohomology groups with coefficients in a generic rank one local system vanish except in the top degree, and bounded chambers form a basis of the remaining cohomology group. We determine precisely when this phenomenon happens for two-dimensional arrangements.

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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