English

Nakayama functor for monads on finite abelian categories

Quantum Algebra 2022-08-18 v1 Category Theory Representation Theory

Abstract

If M\mathcal{M} is a finite abelian category and T\mathbf{T} is a linear right exact monad on M\mathcal{M}, then the category T\mboxmod\mathbf{T}\mbox{-mod} of T\mathbf{T}-modules is a finite abelian category. We give an explicit formula of the Nakayama functor of T\mboxmod\mathbf{T}\mbox{-mod} under the assumption that the underlying functor of the monad T\mathbf{T} has a double left adjoint and a double right adjoint. As applications, we deduce formulas of the Nakayama functor of the center of a finite bimodule category and the dual of a finite tensor category. Some examples from the Hopf algebra theory are also discussed.

Keywords

Cite

@article{arxiv.2208.08203,
  title  = {Nakayama functor for monads on finite abelian categories},
  author = {Kenichi Shimizu},
  journal= {arXiv preprint arXiv:2208.08203},
  year   = {2022}
}

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40 pages