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In this paper, we introduce and study the projectively coresolved Gorenstein flat dimension of a group $G$ over a commutative ring $R$ and we prove that this dimension enjoys all the properties of the cohomological and the Gorenstein…

交换代数 · 数学 2023-11-28 Dimitra-Dionysia Stergiopoulou

An A-module M will be said to be semi-Gorenstein-projective provided that Ext^i(M,A) = 0 for all i > 0. All Gorenstein-projective modules are semi-Gorenstein-projective and only few and quite complicated examples of…

表示论 · 数学 2020-03-18 Claus Michael Ringel , Pu Zhang

In \cite{Ouarghi}, the authors discuss the rings over which all modules are strongly Gorenstein projective. In this paper, we are interesting to an extension of this idea. Thus, we discuss the rings over which every Gorenstein projective…

交换代数 · 数学 2009-09-15 Najib Mahdou , Mohamed Tamekkante

A generalization of Grothendieck's non-vanishing theorem is proved for a module which is finite over a local homomorphism. It is also proved that the Gorenstein injective dimension of such a module, if finite, is bounded below by its Krull…

交换代数 · 数学 2007-05-23 Leila Khatami , Massoud Tousi , Siamak Yassemi

The quasi-projective dimension and quasi-injective dimension are recently introduced homological invariants that generalize the classical notions of projective dimension and injective dimension, respectively. For a local ring $R$ and…

交换代数 · 数学 2025-11-19 Victor H. Jorge-Pérez , Paulo Martins , Victor D. Mendoza-Rubio

Let R be a commutative ring and C a semidualizing R-module. In this article, we introduce and investigate the notion of DC-projective complexes. We first prove that a complex X is DC-projective if and only if each degree of X is a…

环与代数 · 数学 2016-10-31 Yanhong Quan , Renyu Zhao , Chunxia Zhang

The existence of the Gorenstein projective precovers over arbitrary rings is an open question. In this paper, we make use of three diferent techniques addressing intrinsic and homological properties of several classes of relative Gorenstein…

环与代数 · 数学 2025-10-08 Víctor Becerril

We study criteria for a ring - or more generally, for a small category - to be Gorenstein and for a module over it to be of finite projective dimension. The goal is to unify the universal coefficient theorems found in the literature and to…

K理论与同调 · 数学 2020-07-27 Ivo Dell'Ambrogio , Greg Stevenson , Jan Stovicek

This paper generalize the idea of the authors in \cite{Bennis and Mahdou1}. Namely, we define and study a particular case of modules with Gorenstein projective, injective, and flat dimension less or equal than $n\geq 0$, which we call,…

交换代数 · 数学 2009-04-28 Najib Mahdou , Mohammed Tamekkante

Let (R,m) be a Noetherian local ring of depth d and C a semidualizing R-complex. Let M be a finite R-module and t an integer between 0 and d. If G_C-dimension of M/IM is finite for all ideals I generated by an R-regular sequence of length…

交换代数 · 数学 2007-05-23 Shokrollah Salarian , Sean Sather-Wagstaff , Siamak Yassemi

This paper studies finite projective dimension of finitely generated modules over a Noetherian local ring, by means of spectral sequence methods related to generalized local cohomology. Our main goal is to address a question raised by D.…

交换代数 · 数学 2026-04-28 Rafael Holanda , Cleto B. Miranda-Neto

Let R be a commutative Noetherian local ring with residue class field k. In this paper, we mainly investigate direct summands of the syzygy modules of k. We prove that R is regular if and only if some syzygy module of k has a semidualizing…

交换代数 · 数学 2007-05-23 Ryo Takahashi

For a horizontally linked module, over a commutative semiperfect Noetherian ring $R$, the connections of its invariants reduced grade, Gorenstein dimension and depth are studied. It is shown that under certain conditions the depth of a…

交换代数 · 数学 2012-02-23 Mohammad T. Dibaei , Arash Sadeghi

We describe a general correspondence between injective (resp. projective) recollements of triangulated categories and injective (resp. projective) cotorsion pairs. This provides a model category description of these recollement situations.…

代数拓扑 · 数学 2013-10-29 James Gillespie

In this note, we mainly extend some Gorenstein homological properties from special rings (Noetherian or coherent rings ) to arbitrary rings by introducing the notions of Gorenstein weak injective and weak projective modules respectively.

环与代数 · 数学 2015-05-08 Tiwei Zhao

For a dualizing module $D$ over a commutative Noetherian ring $R$ with identity, it is known that its Auslander class $\mathscr{A}_D\left(R\right)$ (respectively, Bass class $\mathscr{B}_D\left(R\right)$) is characterized as those…

表示论 · 数学 2025-07-28 Kamran Divaani-Aazar , Ali Mahin Fallah , Massoud Tousi

We study the projective dimension of finitely generated modules over cluster-tilted algebras End(T) where T is a cluster-tilting object in a cluster category C. It is well-known that all End(T)-modules are of the form Hom(T,M) for some…

表示论 · 数学 2013-06-14 Louis Beaudet , Thomas Brustle , Gordana Todorov

For a Noetherian ring $R$ and a cotilting $R$-module $T$ of injective dimension at least $1$, we prove that the derived dimension of $R$ with respect to the category $\mathcal{X}_T$ is precisely the injective dimension of $T$ by applying…

表示论 · 数学 2016-11-03 Michio Yoshiwaki

We show that an iteration of the procedure used to define the Gorenstein projective modules over a commutative ring $R$ yields exactly the Gorenstein projective modules. Specifically, given an exact sequence of Gorenstein projective…

交换代数 · 数学 2014-02-26 Sean Sather-Wagstaff , Tirdad Sharif , Diana White

We investigate stable homology of modules over a commutative noetherian ring $R$ with respect to a semidualzing module $C$, and give some vanishing results that improve/extend the known results. As a consequence, we show that the balance of…

交换代数 · 数学 2017-09-11 Li Liang