We study the notions of n-hereditary rings and its connection to the classes of finitely n-
presented modules, FP n-injective modules, FP n-flat modules and n-coherent rings. We …

The main aim of this paper is to investigate Cartan-Eilenberg complexes with respect to a
semidualizing module, and extend the existed Foxby equivalence. To this end, we define …

ON N-COHERENT RINGS, N-HEREDITARY RINGS AND N-REGULAR RINGS Page 1 Archive
of SID Bulletin of the Iranian Mathematical Society Vol. 37 No. 4 (2011), pp 251-267. ON …

A ring extension is a ring homomorphism preserving identities. In this article, we establish
the relationship among relatively flat modules, relatively projective modules and relatively …

In this paper, we introduce the notion of finite direct projective modules, which is a
generalization of direct projective modules; counter-example is given. We study the …

In this expºsitory paper, for any right R-module M, we introduce a concept of Page 44 SOME
PROPERTIES OF ADDITIVE END OMORPHISMS AND MAPS ON GROUPS YONG UK CHO …

Let R be a ring and n be a positive integer. R is called left n-coherent, if every n-presented
left R-module is (n+ 1)(n+ 1)-presented. A left R-module M is called (n, 0)-injective if Ext …

In [1] RR Colby has defined a ring R, as left (right) IF if every injective left (right)/?-module is
flat. In [2] RF Damiano has defined FC ring over which left (right) flat and left (right) coflat …

The purpose of this paper and its sequel, is to introduce a new class of modules over a
commutative ring $ R $, called $\mathbb {P} $-radical modules (modules $ M $ satisfying the …