Evaluation birepresentations of affine type A Soergel bimodules
Evaluation birepresentations of affine type A Soergel bimodules
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仿射 A 型 Soergel 双模的评估双表示
DOI:
10.1016/j.aim.2023.109401
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发表时间:
2024
影响因子:
1.7
通讯作者:
Mackaay M
中科院分区:
文献类型:
--
作者:
Mackaay M
In this paper, we use Soergel calculus to define a monoidal functor, called the evaluation functor, from extended affine typeASoergel bimodules to the homotopy category of bounded complexes in finite typeASoergel bimodules. This functor categorifies the well-known evaluation homomorphism from the extended affine typeAHecke algebra to the finite typeAHecke algebra. Through it, one can pull back the triangulated birepresentation induced by any finitary birepresentation of finite typeASoergel bimodules to obtain a triangulated birepresentation of extended affine typeASoergel bimodules. We show that if the initial finitary birepresentation in finite typeAis a cell birepresentation, the evaluation birepresentation in extended affine typeAhas a finitary cover, which we illustrate by working out the case of cell birepresentations with subregular apex in detail.
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