摘要
Two theorems are established which properly extend the class of artinian rings with Morita duality. A question of Anh about QF rings is answered in the negative.
Two theorems are established which properly extend the ckss of artinian rings with Morita duality. A question of Anh about QF-rings is answered in the negative.
基金
ProjectsupportedbytheNationalNaturalScienceFoundationofChina (GrantNo .197710 16 ) .