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Najib Mahdou

Publications and source records attributed to Najib Mahdou.

At least 19 recordsLinked to original sources
arXiv2026

$S$-Prime and $S$-maximal ideals in trivial ring extensions of commutative rings

This paper explores the study of $S$-prime and $S$-maximal ideals in the context of trivial ring extensions $A \ltimes M$. Through counterexamples, we demonstrate that $S$-prime (resp., $S$-maximal) ideals in $A \ltimes M$ are not necessarily homogeneous, and a homogeneous $S$-prime (resp., $S$-maximal) ideal does not necessarily have the form $P \ltimes M$, where $P$ is an $S_0$-prime (resp., $S_0$-maximal) ideal of $A$. Moreover, we characterize the conditions under which an ideal $J$ (not necessarily homogeneous) in the trivial ring extension $A \ltimes M$ is $S$-prime (resp., $S$-maximal). Additionally, we demonstrate that all $S$-prime (and consequently $S$-maximal) ideals in $A \ltimes M$ are of the form $P \ltimes M$, where $P$ is an $S_0$-prime ideal of $A$, if and only if $M$ is an $S_0$-divisible $A$-module. As an application, we explore the transfer of the concepts of compactly $S$-packed rings, coprimely $S$-packed rings and $S$-$pm$-rings to the trivial ring extension. These results provide significant insights into the relation between $S$-primality and $S$-maximality in trivial ring extensions, contributing to a deeper understanding of ideal theory in this context. This work not only enriches the theoretical framework of ring structures but also advances the broader field of algebraic theory through practical examples and applications.

math.AC↗
arXiv2025

On j-Artinian Modules Over Commutative Rings

Researchers introduced the notion of j-Artinian rings in [3] and obtained significant results concerning this new class of rings. Motivated by their definition and findings, we extend the study to modules by introducing the concept of j-Artinian modules. Recall from [9] that, if R is a commutative ring with identity, M is an R-module, and j is a submodule of M, then a submodule N of M is called a j-submodule if N \not\subseteq j. We say that M is a j-Artinian R-module if every descending chain of j-submodules becomes stationary. In this paper, we provide a characterization of j-Artinian modules. Moreover, we establish an analogue of Akizuki's theorem in this context and discuss its extension to amalgamated structures.

math.AC↗
arXiv2024

On $\phi$-Pr\"ufer like conditions

In this paper, we investigate the question of when a $\phi$-ring is $\phi$-Pr\"ufer using two types of techniques: first, by analysing the lattice structure of the nonnil ideals of $\phi$-rings; and secondly, by considering content ideal techniques which were developed to study Gaussian polynomials. In particular, we conclude that every Gaussian $\phi$-ring is $\phi$-Pr\"ufer. Key concepts such as $\phi$-weak global dimension, primary ideals and irreducible ideals are discussed, along with their hereditary properties in $\phi$-Pr\"ufer rings. We also prove that any semi-local $\phi$-Pr\"ufer ring is a $\phi$-B\'ezout ring. This paper includes several theorems and examples that provide insights into the $\phi$-Pr\"ufer rings and their implications in the field of ring theory.

math.AC↗
arXiv2022

S-1-absorbing primary submodules

In this work, we introduce the notion of $S$-1-absorbing primary submodule as an extension of 1-absorbing primary submodule. Let $S$ be a multiplicatively closed subset of a ring $R$ and $M$ be an $R$-module. A submodule $N$ of $M$ with $(N:_{R}M)\cap S=\emptyset$ is said to be $S$-1-absorbing primary if whenever $abm\in N$ for some non-unit $a,b\in R$ and $m\in M$, then either $sab\in(N:_{R}M)$ or $sm\in M$-$rad(N)$. We examine several properties of this concept and provide some characterizations. In addition, $S$-1-absorbing primary avoidance theorem and $S $-1-absorbing primary property for idealization and amalgamation are presented.

math.AC↗
arXiv2021

Commutative rings with one-absorbing factorization

Let $R$ be a commutative ring with nonzero identity. A. Yassine et al. defined in the paper (Yassine, Nikmehr and Nikandish, 2020), the concept of $1$-absorbing prime ideals as follows: a proper ideal $I$ of $R$ is said to be a $1$-absorbing prime ideal if whenever $xyz\in I$ for some nonunit elements $x,y,z\in R$, then either $xy\in I$ or $z\in\ I$. We use the concept of $1$-absorbing prime ideals to study those commutative rings in which every proper ideal is a product of $1$-absorbing prime ideals (we call them $OAF$-rings). Any $OAF$-ring has dimension at most one and local $OAF$-domains $(D,M)$ are atomic such that $M^2$ is universal.

math.AC↗
arXiv2021

On $1$-absorbing $δ$-primary ideals

Let $R$ be a commutative ring with nonzero identity. Let $\mathcal{I}(R)$ be the set of all ideals of $R$ and let $δ: \mathcal{I}(R)\longrightarrow \mathcal{I}(R)$ be a function. Then $δ$ is called an expansion function of ideals of $R$ if whenever $L, I, J$ are ideals of R with $J \subseteq I$, we have $L \subseteq δ( L)$ and $δ(J)\subseteq δ(I)$. Let $δ$ be an expansion function of ideals of $R$. In this paper, we introduce and investigate a new class of ideals that is closely related to the class of $δ$-primary ideals. A proper ideal $I$ of $R$ is said to be a $1$-absorbing $δ$-primary ideal if whenever nonunit elements $a,b,c \in R $ and $abc\in I$, then $ab \in I$ or $c\in δ(I).$ Moreover, we give some basic properties of this class of ideals and we study the $1$-absorbing $δ$-primary ideals of the localization of rings, the direct product of rings and the trivial ring extensions.

math.AC↗
arXiv2020

Commutative rings with invertible-radical factorization

In this paper, we study the classes of rings in which every proper (regular) ideal can be factored as an invertible ideal times a nonempty product of proper radical ideals. More precisely, we investigate the stability of these properties under homomorphic image and their transfer to various contexts of constructions such as direct product, trivial ring extension and amalgamated duplication of a ring along an ideal. Our results generate examples that enrich the current literature with new and original families of rings satisfying these properties.

math.AC↗
arXiv2018

Gaussian and Prüfer conditions in bi-amalgamated algebras

Let $f: A\rightarrow B$ and $g: A\rightarrow C$ be two ring homomorphisms and let $J$ (resp., $J'$) be an ideal of $B$ (resp., $C$) such that $f^{-1}(J)=g^{-1}(J')$. In this paper, we investigate the transfer of the notions of Gaussian and Prüfer properties to the bi-amalgamation of $A$ with $(B,C)$ along $(J,J')$ with respect to $(f,g)$ (denoted by $A\bowtie^{f,g}(J,J')),$ introduced and studied by Kabbaj, Louartiti and Tamekkante in 2013. Our results recover well known results on amalgamations in \cite{Finno} and generate new original examples of rings satisfying these properties.

math.AC↗
arXiv2014

n-Coherence and (n, d)- properties in amalgamated algebra

Let $f: A\rightarrow B$ be a ring homomorphism and let $J$ be an ideal of $B$. The purpose of this article is to examine the transfer of the properties of $n$-coherence and strong $n$-coherence from a ring $A$ to his amalgamated algebra $A\bowtie^{f} J$. Also, we investigate the $(n,d)$-property of the amalgamated algebra $A \bowtie^{f}J$, to resolve Costa's first conjecture.

math.AC↗
arXiv2014

Prûfer property in amalgamated algebras along an ideal

Let $f : A \rightarrow B$ be a ring homomorphism and $J$ be an ideal of $B$. In this paper, we give a characterization of zero divisors of the amalgamation which is a generalization of Maimani's and Yassemi's work (see \cite{y}). Also, we investigate the transfer of Prüfer domain concept to commutative rings with zero divisors in the amalgamation of $A$ with $B$ along $J$ with respect to $f$ (denoted by $A\bowtie^fJ),$ introduced and studied by D'Anna, Finocchiaro and Fontana in 2009 (see \cite{AFF1} and \cite{AFF2}). Our aim is to provide new classes of commutative rings satisfying this property.

math.AC↗
arXiv2014

Self injective property in amalgamated algebra along an ideal

Let $f: A\rightarrow B$ be a ring homomorphism and let $J$ be an ideal of $B$. In this paper, we investigate the transfer of self-injective property to the amalgamation of $A$ with $B$ along $J$ with respect to $f$ (denoted by $A\bowtie^fJ),$ introduced and studied by D'Anna, Finocchiaro and Fontana in 2009. We give also a characterization of $A\bowtie^fJ$ to be quasi-Frobenius.

math.AC↗
arXiv2014

Gaussian property in amalgamated algebras along an ideal

Let $f : A \rightarrow B$ be a ring homomorphism and $J$ be an ideal of $B$. In this paper, we investigate the transfer of Gaussian property to the amalgamation of $A$ with $B$ along $J$ with respect to $f$ (denoted by $A\bowtie^fJ),$ introduced and studied by D'Anna, Finocchiaro and Fontana in 2009.

math.AC↗
arXiv2013

Coherence in amalgamated algebra along an ideal

Let $f: A\rightarrow B$ be a ring homomorphism and let $J$ be an ideal of $B$. In this paper, we investigate the transfert of the property of coherence to the amalgamation $A\bowtie^{f}J$. We provide necessary and sufficient conditions for $A\bowtie^{f}J$ to be a coherent ring.

math.AC↗
arXiv2011

When every principal ideal is flat

This paper deals with well-known notion of $PF$-rings, that is, rings in which principal ideals are flat. We give a new characterization of $PF$-rings. Also, we provide a necessary and sufficient condition for $R\bowtie I$ (resp., $R/I$ when $R$ is a Dedekind domain or $I$ is a primary ideal) to be $PF$-ring. The article includes a brief discussion of the scope and precision of our results.

math.AC↗
arXiv2010

Prüfer- like conditions in the amalgamated duplication of a ring along an ideal

In this paper, we consider five possible extensions of the Prüfer domain notion to the case of commutative rings with zero-divisors. We investigate the transfer of these Prüfer-like properties between a ring $R$ and $R\bowtie I$; his amalgamated duplication along some ideal $I$, and then generate new and original families of rings with these properties.

math.AC↗
arXiv2010

Amalgamation of rings defined by bézout-like conditions

Let $f:A\lo B$ be a ring homomorphism and let $J$ be an ideal of $B.$ In this paper, we investigate the transfer of notions elementary divisor ring, Hermite ring and Bézout ring to the amalgamation $A\bowtie^fJ.$ We provide necessary and sufficient conditions for $ A\bowtie^fJ$ to be an elementary divisor ring where $A$ and $B$ are integral domains. In this case it is shown that $ A\bowtie^fJ$ is an Hermite ring if and only it is a Bézout ring. In particular, we study the transfer of the previous notions to the amalgamated duplication of a ring $A$ along an $A-$submodule $E$ of $Q(A)$ such that $E^2\subseteq E.$

math.AC↗
arXiv2010

On Weakly Coherent Rings

In this paper, we define weakly coherent rings, and examine the transfer of these rings to homomorphic image, trivial ring extension, localization, and direct product. These results provide examples of weakly coherent rings that are not coherent rings. We show that the class of weakly coherent rings is not stable by localization. Also, we show that the class of weakly coherent rings and the class of strongly 2-coherent rings are not comparable.

math.AC↗