Results 1 to 10 of about 25,785 (225)

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   +3 more sources

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 decomposition properties of injective and pure-injective modules [PDF]

open access: yes, 1994
Many results are known about injective modules, or generalisations thereof, in the category of modules over a ring. For example there are results concerning the expressibility of such modules as direct sums of indecomposable modules. The theme of this paper is to prove such results for injective objects, or more general objects, in a suitable category.
DUNG, NGUYEN VIET, GARCIA, JOSE LUIS
core   +6 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

Classification of 1-absorbing comultiplication modules over a pullback ring [PDF]

open access: yesCategories and General Algebraic Structures with Applications, 2023
One of the aims of the modern representation theory is to solve classification problems for subcategories of modules over a unitary ring R. In this paper, we introduce the concept of 1-absorbing comultiplication modules and classify 1-absorbing ...
Farkhondeh Farzalipour, Peyman Ghiasvand
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

Ziegler partial morphisms in additive exact categories

open access: yesBulletin of Mathematical Sciences, 2020
We develop a general theory of partial morphisms in additive exact categories which extends the model theoretic notion introduced by Ziegler in the particular case of pure-exact sequences in the category of modules over a ring.
Manuel Cortés-Izurdiaga   +3 more
doaj   +1 more source

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

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