Triples of arrangements and local systems
Triples of arrangements and local systems
复制标题
三重安排和局部系统
DOI:
10.1090/s0002-9939-02-06428-6
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发表时间:
2001
期刊:
影响因子:
--
通讯作者:
Daniel C. Cohen
中科院分区:
文献类型:
--
作者:
Daniel C. Cohen
For a triple of complex hyperplane arrangements, there is a well-known long exact sequence relating the cohomology of the complements. We observe that this result extends to certain local coefficient systems, and use this extension to study the characteristic varieties of arrangements. We show that the first characteristic variety may contain components that are translated by characters of any order, thereby answering a question of A. Suciu.