Torus equivariant D-modules and hypergeometric systems
Torus equivariant D-modules and hypergeometric systems
复制标题
环面等变 D 模和超几何系统
DOI:
10.1016/j.aim.2019.04.050
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发表时间:
2019
影响因子:
1.7
通讯作者:
Walther, Uli
中科院分区:
文献类型:
--
作者:
Berkesch, Christine;Matusevich, Laura Felicia;Walther, Uli
We formalize, at the level of D-modules, the notion that A-hypergeometric systems are equivariant versions of the classical hypergeometric equations. For this purpose, we construct a functor Π B A˜ on a suitable category of torus equivariant D-modules and show that it preserves key properties, such as holonomicity, regularity, and reducibility of monodromy representation. We also examine its effect on solutions, characteristic varieties, and singular loci. By applying Π B A˜ to suitable binomial D-modules, we shed new light on the D-module theoretic properties of systems of classical hypergeometric differential equations.
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DOI:
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发表时间:
2013
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影响因子:
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作者:
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DOI:
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2003
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1995
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作者:
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影响因子:
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2007
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