Resumen de Modules with respect to cyclic purity

Lixin Mao

• An exact sequence 0→A→B→C→0 of left R-modules is called cyclically pure if for every right ideal I of R, the sequence 0→(R/I)⊗A→(R/I)⊗B→(R/I)⊗C→0 is exact. In this paper, we study some special modules with respect to cyclic purity, such as CP-projective, CP-injective and CP-flat modules.