Group corings

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We introduce group corings, and study functors between categories of comodules over group corings, and the relationship to graded modules over graded rings. Galois group corings are defined, and a Structure Theorem for the $G$-comodules over a Galois group coring is given. We study (graded) Morita contexts associated to a group coring. Our theory is applied to group corings associated to a comodule algebra over a Hopf group coalgebra.
38 pages

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Rings and Algebras, 16W30, 16W50

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http://salesiana.dossiersoluciones.com/handle/123456789/123068

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0701931
 http://arxiv.org/abs/math/0701931

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arXiv