Towers of corings

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The notion of a Frobenius coring is introduced, and it is shown that any such coring produces a tower of Frobenius corings and Frobenius extensions. This establishes a one-to-one correspondence between Frobenius corings and extensions.
8 pages, LaTeX; uses xypic; Prop 2.9 replaced by a remark

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Rings and Algebras, Commutative Algebra, Quantum Algebra, 16W30;13B02

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http://salesiana.dossiersoluciones.com/handle/123456789/63030

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0201014
 http://arxiv.org/abs/math/0201014

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arXiv