Perverse sheaves on semiabelian varieties
Perverse sheaves on semiabelian varieties
复制标题
半阿贝尔品种上的反常滑轮
DOI:
--
复制
发表时间:
2013
期刊:
影响因子:
--
通讯作者:
Thomas Kramer
中科院分区:
文献类型:
--
作者:
Thomas Kramer
We give a Tannakian description for categories of l-adic perverse sheaves on semiabelian varieties which combines a construction of Gabber and Loeser for algebraic tori with a generic vanishing theorem for the cohomology of constructible sheaves on abelian varieties. As an application we explain how the arising Tannaka groups on abelian varieties can be studied in terms of semiabelian degenerations via the functor of nearby cycles.