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Frobenius functors for corings

J. Gomez-Torrecillas·M. Zarouali Darkaoui
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Abstract

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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J. Gomez-Torrecillas, M. Zarouali Darkaoui. 2004-10-29. Frobenius functors for corings. https://arxiv.org/abs/math/0410626

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