… quasi-projective modules. !• Quasi-projective modules* The goal of this section is to prove
… 1.10 which is a characterization of quasi-projective modules over left perfect rings. The first …

… In the present paper first we generalize the theorem by giving necessary and sufficient
conditions for quasi-projective modules to be injective and ones for quasi-injective modules to be …

… module, dp : P ~ M be an epimorphism, and S = End (P). Then i) M is quasi-projective if Ker
tk … under S, and ii) Ker~b is invariant under S if Ker~b is small in P and M is quasi projective. …

Let Q be the field of rational numbers. As a module over the ring Z of integers, Q is Z-projective,
but Q Z is not a projective module. Contrary to this situation, we show that over a prime …

… that M is a quasi-projective R-module. 111 … a quasi-projective module M with a projective
cover is projective modulo its annihilator. Thus, (finitely generated) quasi-projective modules …

… P(M) is a projective module, and Ker <p is small in P(M) (ie A=P … A module is quasi-projective
iff for every epimorphism q:M^A, … of two quasi-projective modules is always quasiprojective. …

… RR is II-quasi-projective; and that any quasi-projective module that possesses a … module
over a factor ring of R. In section 3 we show that any finitely generated quasi-projective module …

… question, but a quasi-projective that has a projective cover is always Z-quasi-projective and,
in … (ie, a left per[eel ring [1]) a quasi-projective module is projective aaodulo its annihilator. …

… image of a quasi-injective module is quasi-injective. One … of a finitely generated quasi-projective
module is quasi-projective. In … of a quasi-projective module is quasi-projective. Following …

… almost relative projective modules and almost relative injective modules in [3, 6, 7]. In this
short note we define a new module, an almost projective (resp. almost injective) module. Let R …