Properties of RD-projective and RD-injective modules

Lixin Mao
June 2011
Turkish Journal of Mathematics;2011, Vol. 35 Issue 2, p187
Academic Journal
In this paper, we first study RD-projective and RD-injective modules using, among other things, covers and envelopes. Some new characterizations for them are obtained. Then we introduce the RD-projective and RD-injective dimensions for modules and rings. The relations between the RD-homological dimensions and other homological dimensions are also investigated.


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