In this paper we introduce the notion of μ μ-Hopfian modules which is a proper
generalization of that of Hopfian modules. We give some characterizations and properties of …

In this paper, we introduce a proper generalization of that of Hopfian modules, called
$\gamma $-Hopfian modules. A right $ R $-module $ M $ is said to be $\gamma $-Hopfian, if …

In this paper we introduce and study the notion of dual continuous (d–continuous) modules.
A decomposition theorem for ad–continuous module is proved; this generalizes all known …

A ring R is a left qp-ring if each of its left ideals is quasi-projective as a left R-module in the
sense of Wu and Jans. The following results giving the structure of left qp-rings are obtained …

It is well-known that quasi-Frobenius rings are characterized by the property that all
propective right modules are injective, as well as by the property that all injective right …

In 1971, Koehler proved a structure theorem for quasi-projective modules over right perfect
rings by using results of Wu–Jans. Later Mohamed–Singh studied discrete modules over …

The main aim of this paper is the Hopficity of module classes, the study of modules (rings) by
properties of their endomorphisms is a classical research subject. In 1986, Hiremath\cite {Hi} …

Mathematical Journal of Okayama University Page 1 Mathematical Journal of Okayama
University Volume 19, Issue 1 1976 Article 7 DECEMBER 1976 Semiperfect rings with quasi-projective …

This note is devoted to proving the theorem that every right quasi-projective module over a
semi-primary ring R has the double centralizer property if and only if R is a direct sum of …

Action of a pomonoid on partially ordered sets (S-posets) has beautiful aspects in practical
subjects such as automata theory, projection algebra and theoretical computer science …