Results 1 to 10 of about 28,036 (238)

Duality of Preenvelopes and Pure Injective Modules [PDF]

open access: yesCanadian Mathematical Bulletin, 2013
Let $R$ be an arbitrary ring and $(-)^+=\Hom_{\mathbb{Z}}(-, \mathbb{Q}/\mathbb{Z})$ where $\mathbb{Z}$ is the ring of integers and $\mathbb{Q}$ is the ring of rational numbers, and let $\mathcal{C}$ be a subcategory of left $R$-modules and $\mathcal{D}$
Huang, Zhaoyong
core   +3 more sources

Some Properties of Strongly Principally Self-Injective Modules [PDF]

open access: yesJournal of Applied Sciences and Nanotechnology, 2022
The idea of generalizing quasi injective by employing a new term is introduced in this paper. The introduction of principally self-injective modules, which are principally self-injective modules.
Khalid Munshid   +2 more
doaj   +1 more source

Existence of Covers and Envelopes of a Left Orthogonal Class and Its Right Orthogonal Class of Modules

open access: yesJournal of Mathematics, 2022
In this paper, we investigate the notions of X⊥-projective, X-injective, and X-flat modules and give some characterizations of these modules, where X is a class of left modules. We prove that the class of all X⊥-projective modules is Kaplansky.
Arunachalam Umamaheswaran   +4 more
doaj   +1 more source

Cotilting versus pure-injective modules [PDF]

open access: yesPacific Journal of Mathematics, 2003
Let \(R\) be an associative ring. A left \(R\)-module \(_RW\) is said to be cotilting if the class of modules cogenerated by \(_RW\) coincides with the class of modules for which the functor \(\text{Ext}^1_R(-,W)\) vanishes. This paper explores the relation between cotilting modules and pure-injective modules.
Mantese F, Ruzicka P, TONOLO, ALBERTO
openaire   +4 more sources

Cotorsion modules and relative pure-injectivity [PDF]

open access: yesJournal of the Australian Mathematical Society, 2006
AbstractLet R be a ring. A right R-module C is called a cotorsion module if Ext1R (F, C) = 0 for any flat right R-module F. In this paper, we first characterize those rings satisfying the condition that every cotorsion right (left) module is injective with respect to a certain class of right (left) ideals.
Mao, Lixin, Ding, Nanqing
openaire   +2 more sources

Cotilting modules are pure-injective [PDF]

open access: yesProceedings of the American Mathematical Society, 2003
We prove that a cotilting module over an arbitrary ring is pure-injective.
openaire   +4 more sources

Pure-injective modules [PDF]

open access: yesGlasgow Mathematical Journal, 1973
AbstractIt is proved that a pure-injective module over a commutative ring with unity is a summand of a product of duals of finitely presented modules, where duals are to be understood with reference to the circle group T, with induced module structures.
openaire   +1 more source

Konstruksi Ring Bersih dari Sebarang Ring

open access: yesJurnal Matematika, 2015
The aims of this research was to construct a clean ring from any ring.  The base on the fact  that the endomorphism ring of every pure-injective module is clean, it was constructed a clean ring from any ring. So, the result of this research was it always
Kartika Sari, Indah Emilia Wijayanti
doaj   +1 more source

Behavior of countably generated pure-projective modules [PDF]

open access: yes, 1992
We first prove that every countably presented module is a pure epimorphic image of a countably generated pure-projective module, and by using this we show that if every countably generated pure-projective module is pure-injective then every module is ...
Azumaya, Goro
core   +2 more sources

Pure Baer injective modules

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1997
In this paper we generalize the notion of pure injectivity of modules by introducing what we call a pure Baer injective module. Some properties and some characterization of such modules are established.
Nada M. Al Thani
doaj   +1 more source

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