Deformations of algebras defined by tilting bundles
Deformations of algebras defined by tilting bundles
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由倾斜束定义的代数变形
DOI:
10.1016/j.jalgebra.2018.07.031
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发表时间:
2018
影响因子:
0.9
通讯作者:
Karmazyn J
中科院分区:
文献类型:
--
作者:
Karmazyn J
In this paper we produce noncommutative algebras derived equivalent to deformations of schemes with tilting bundles. We do this in two settings, first proving that a tilting bundle on a scheme lifts to a tilting bundle on an infinitesimal deformation of that scheme and then expanding this result to C⁎-equivariant deformations over schemes with a good C⁎-action. In both these situations the endomorphism algebra of the lifted tilting bundle produces a deformation of the original endomorphism algebra, and this is a graded deformation in the C⁎-equivariant case. We apply our results to rational surface singularities, generalising the deformed preprojective algebras of Crawley-Boevey and Holland, and also to symplectic situations where the deformations produced are related to symplectic reflection algebras.
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