… the endomorphism ring S of a right R-module M is a right (m, n)-coherent ring if and only if
every M-(m, n)-copresented right Rmodule … of right R-modules has a pseudokernel in add(M) (…

… of endomorphism rings of automorphism-invariant modules. It shows that if M is an
automorphisminvariant self-generator module … We also show that a ring R is right self-injective if …

… Next, N is called (α, β)-flat over its endomorphism ring if NS is flat relative to all A ∈ S β×α .
… ,n)-flat [1,9] and flat modules over their endomorphism rings. The notion of quasi-injectivity is …

… groups we consider are abelian, R denotes an associative ring with identity, and M denotes
a left R-module … We call Ma cotorsion-free left R-module, and if R+ is a cotorsion-free group …

… semi-projective modules and their endomorphism rings. It is shown that a ring R is a
semilocal ring if and only if each semiprimitive finitely generated right R-module is pseudo semi-…

… A left R-module M is strongly indecomposable if M is non-zero and the endomorphism ring
of M is local. Strongly indecomposable modules are sometimes called endolocal modules. …

… properties of the endomorphism ring of M from those of the endomorphism ring of X. In this
paper, we study the relationship between the endomorphisms ring of two modules K and M …

… A module over a ring is a generalization of the notion of vector space … 3.2 Classification of
Modules In this chapter, we shall discuss some significant types of modules over various rings, …

… truss and on study of their relationship to modules over a ring. Given a … ring R we define
two functors: the functor T from the category of modules over R to the category of modules over …

… analysis, we prove that the endomorphism ring of the natural permutation module for a 3 …
study the endomorphism ring of the natural permutation modules of a 3 2 -transitive groups. The …