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20092023
most citedThe pivotal cover and Frobenius-Schur indicators

19 citations · 79 across the 30 of their papers we have counts for

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18 papers · 1 filter

math.QA2023

Nakayama functor for coalgebras and a categorical perspective of the integral theory for Hopf algebras

Kenichi Shimizu

We review basic properties of the Nakayama functor for coalgebras and introduce a number of applications to tensor categories. We also give equivalent conditions for a coquasi-bial…

math.QA2023

Pointed Hopf superalgebras of dimension up to 10

Taiki Shibata, Kenichi Shimizu, Ryota Wakao

By utilizing the technique introduced in our previous work to construct Hopf superalgebras by an inverse procedure of the Radford-Majid bosonization, we classify non-semisimple poi…

math.QA2022

Nakayama functor for monads on finite abelian categories

Kenichi Shimizu

If is a finite abelian category and is a linear right exact monad on , then the category $\mathbf{T}\mbox{-mod}$ of -modules is…

math.QA2021★ 1 cited

Nakayama functors for coalgebras and their applications to Frobenius tensor categories

Taiki Shibata, Kenichi Shimizu

We introduce Nakayama functors for coalgebras and investigate their basic properties. These functors are expressed by certain (co)ends as in the finite case discussed by Fuchs, Sch…

math.QA2021★ 6 cited

Modified traces and the Nakayama functor

Taiki Shibata, Kenichi Shimizu

We organize the modified trace theory with the use of the Nakayama functor of finite abelian categories. For a linear right exact functor on a finite abelian category $\mathcal…

math.QA2019★ 5 cited

Tannaka theory and the FRT construction over non-commutative algebras

Kenichi Shimizu

Let be an algebra over a commutative ring . We introduce the notion of a coquasitriangular left bialgebroid over and show that the category of left comodules over such a…