Revistes Catalanes amb Accés Obert (RACO)

Characterizations of semiperfect and perfect rings

W. Xue

Resum


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 coves are adapted from Azumaya's generalized projective covers.

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