ON THE IRREDUCIBLE COMPONENTS OF CHARACTERISTIC VARIETIES

ON THE IRREDUCIBLE COMPONENTS OF CHARACTERISTIC VARIETIES
复制标题

论特征品种的不可约成分

DOI:
--
复制
发表时间:
2007
期刊:
影响因子:
--
通讯作者:
A. Dimca
A. Dimca
中科院分区:
--
文献类型:
--
作者:
A. Dimca

文献摘要

被引文献

相似文献

本文对光滑不可约拟射影复变M上的秩一局部系统的特征变种进行了简要的研究。一个重要的新结果是命题1.8,给出了可构造束F = R 0 F * (L)的附加信息,其中L是M上的秩一局部系统,F上的秩一局部系统M→S是一个满射态射,S是光滑曲线,F的一般纤维F连通。推论1.9说对于S紧化,F的奇异支持不能是单态的。
This is a quick survey on the characteristic varieties associated to rank one local systems on a smooth, irreducible, quasi-projective complex variety M. A key new result is Proposition 1.8, giving additional information on the constructible sheaf F = R 0 f∗(L), where L is a rank one local system on M and f : M → S is a surjective morphism with S a smooth curve and the generic fiber F of f connected. Corollary 1.9 says that for S compact, the singular support of F cannot be a singleton.