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Characterizations of semiperfect and perfect rings.

Weimin Xue (1996)

Publicacions Matemàtiques

We characterize semiperfect modules, semiperfect rings, and perfect rings using locally projective covers and generalized locally projective covers, where locally projective modules were introduced by Zimmermann-Huisgen and generalized locally projective covers are adapted from Azumaya’s generalized projective covers.

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