Comodules over semiperfect corings

Abstract

We discuss when the Rat functor associated to a coring satisfying the left $\alpha$-condition is exact. We study the category of comodules over a semiperfect coring. We characterize semiperfect corings over artinian rings and over qF-rings.

18 pages

Cited by in corpus (2)

• Morita theory of comodules over corings
• The Picard Group of Corings