Relative Serre functor for comodule algebras
Relative Serre functor for comodule algebras
复制标题
共模代数的相对 Serre 函子
DOI:
10.1016/j.jalgebra.2023.07.015
复制
发表时间:
2019
影响因子:
0.9
通讯作者:
K. Shimizu
中科院分区:
文献类型:
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作者:
K. Shimizu
Let C be a finite tensor category, and let M be an exact left C-module category. The relative Serre functor of M is an endofunctor S on M together with a natural isomorphism Hom _ (M, N)⁎≅ Hom _ (N, S (M)) for M, N∈ M, where Hom _ is the internal Hom functor of M. In this paper, we discuss the case where C and M are the category of finite-dimensional left modules over a finite-dimensional Hopf algebra H and a finite-dimensional left H-comodule algebra L, respectively. We give an explicit description of the relative Serre functor of M and its twisted module structure in terms of the Frobenius structure of L. We also study pivotal structures on M and give some concrete examples.
DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
Stephen Coughlan;Taro Sano;Kenichi Shimizu
通讯作者:
Kenichi Shimizu