Frobenius functors for corings

Details Frobenius functors for corings Frobenius functors for corings

2004-10-29

arxiv.org/abs/math/0410626v1

Mathematics

Rings and Algebras

Scientific paper

We investigate Frobenius pairs between categories of comodules over rather
general corings. We particularize to the case of the adjoint pair of functors
associated to a morphism of corings over different base rings, which leads to a
reasonable notion of Frobenius coring extension. When applied to corings
stemming from entwining structures, we obtain new results in this setting.

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