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Serre Theorem for involutory Hopf algebras

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Militaru G.

Open Mathematics

2010

tom 8

nr 1

15-21

We call a monoidal category C a Serre category if for any C, D ∈ C such that C ⊗ D is semisimple, C and D are semisimple objects in C. Let H be an involutory Hopf algebra, M, N two H-(co)modules such that M ⊗ N is (co)semisimple as a H-(co)module. If N (resp. M) is a finitely generated projective k-module with invertible Hattory-Stallings rank in k then M (resp. N) is (co)semisimple as a H-(co)module. In particular, the full subcategory of all finite dimensional modules, comodules or Yetter-Drinfel’d modules over H the dimension of which are invertible in k are Serre categories.

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1 Open Mathematics

1 Militaru G.

1 2010

Wyniki wyszukiwania

Serre Theorem for involutory Hopf algebras