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We study the projective spectrum of the Rees algebra of a module, and characterize it by a universal property. As applications, we give descriptions of universal flatifications of modules and of birational projective morphisms.

Algebraic Geometry · Mathematics 2017-11-07 Gustav Sædén Ståhl

Given a topological ring $R$, we study semitopological $R$-modules, construct their completions, Bohr and borno modifications. For every topological space $X$, we construct the free (semi)topological $R$-module over $X$ and prove that for a…

Functional Analysis · Mathematics 2021-11-01 Taras Banakh , Alex Ravsky

Over a commutative Noetherian ring, we show that the Auslander-Reiten conjecture holds true for the class of (finitely generated) modules whose dual has finite complete intersection dimension. We provide another result that validates the…

Commutative Algebra · Mathematics 2026-03-16 Dipankar Ghosh , Mouma Samanta

In this article, we introduce the concepts of graded $s$-prime submodules which is a generalization of graded prime submodules. We study the behavior of this notion with respect to graded homomorphisms, localization of graded modules,…

Rings and Algebras · Mathematics 2020-09-15 Hicham Saber , Tariq Alraqad , Rashid Abu-Dawwas

In the last few years, Lopez-Permouth and several collaborators have introduced a new approach in the study of the classical projectivity, injectivity and flatness of modules. This way, they introduced subprojectivity domains of modules as…

Category Theory · Mathematics 2021-03-03 Houda Amzil , Driss Bennis , J. R. Garcia Rozas , Hanane Ouberka , Luis Oyonarte

Let $C$ be a semidualizing module. We first investigate the properties of finitely generated $G_C$-projective modules. Then, relative to $C$, we introduce and study the rings of Gorenstein (weak) global dimensions at most 1, which we call…

Commutative Algebra · Mathematics 2015-01-23 Guoqiang Zhao , Juxiang Sun

Invariants with respect to recollements of the stable category of Gorenstein projective A-modules over an algebra A and stable equivalences are investigated. Specifically, the Gorenstein rigidity dimension is introduced. It is shown that…

Representation Theory · Mathematics 2022-09-08 Nan Gao , Chi-Heng Zhang

We investigate nearly Gorenstein property for a normal graded ring $R = \bigoplus_{n\ge 0}R_n$ finitely generated over a field. For that purpose, we investigate ${K_R}^{-1}$, the inverse of $K_R$ (the canonical module of $R$) and introduce…

Commutative Algebra · Mathematics 2026-02-05 Tomohiro Okuma , Kei-ichi Watanabe , Ken-ichi Yoshida

We give a complete classification of complex Q-homology projective planes with isolated rational double point singularities and numerically trivial canonical bundle. There are 31 types, and each has one-dimensional moduli. In fact, all…

Algebraic Geometry · Mathematics 2016-11-14 Matthias Schuett

The depth of tensor product of modules over a Gorenstein local ring is studied. For finitely generated modules M and N over a Gorenstein local ring R, under some assumptions on the vanishing of finite number of Tate and relative homology…

Commutative Algebra · Mathematics 2017-02-28 Arash Sadeghi

Let $\varphi\colon R \rightarrow A$ be a finite ring homomorphism, where $R$ is a two-sided Noetherian ring, and let $M$ be a finitely generated left $A$-module. Under suitable homological conditions on $A$ over $R$, we establish a close…

Representation Theory · Mathematics 2026-04-27 Jian Liu

Let $R$ be a commutative ring with identity. For an $R$-module $M$, the notion of strongly prime submodule of $M$ is defined. It is shown that this notion of prime submodule inherits most of the essential properties of the usual notion of…

Commutative Algebra · Mathematics 2009-12-10 A. R. Naghipour

We show that every tilting module of projective dimension one over a ring R is associated in a natural way to the universal localization (in the sense of Schofield) of R at a set of finitely presented modules of projective dimension one. We…

Representation Theory · Mathematics 2009-08-17 Lidia Angeleri Hügel , Maria Archetti

In this paper, we introduce the notions of ${\rm FP}_n$-injective and ${\rm FP}_n$-flat complexes in terms of complexes of type ${\rm FP}_n$. We show that some characterizations analogous to that of injective, FP-injective and flat…

Category Theory · Mathematics 2022-08-02 Tiwei Zhao , Marco A. Pérez

We consider the following question: Is Gorenstein homology a X-pure homology, in the sense defined by Warfield, for a class X of modules? Let GP denote the class of Gorenstein projective modules. We prove that over a commutative Noetherian…

Commutative Algebra · Mathematics 2014-03-06 Fatemeh Zareh-Khoshchehreh , Mohsen Asgharzadeh , Kamran Divaani-Aazar

In the paper, we focus on the silting properties and the combinatorial properties of silting and Gorenstein, which is called Gorenstein silting, where the main tools used are recollements of module categories and tensor products. For a ring…

Representation Theory · Mathematics 2022-09-02 Nan Gao , Jing Ma

Over Cohen--Macaulay rings admitting a pointwise dualizing module, we show that the class of modules of restricted projective dimension bounded by any integer is finitely deconstructible and that the class of modules of restricted flat…

Commutative Algebra · Mathematics 2025-08-29 Souvik Dey , Michal Hrbek , Giovanna Le Gros

In this paper, we discuss some properties on Lucas modules. In details, we show that direct and inverse limits of Lucas modules are Lucas modules, and every $R$-module has a Lucas envelope and a Lucas cover. Moreover, some properties of…

Commutative Algebra · Mathematics 2023-02-28 Xiaolei Zhang , Guocheng Dai , Wei Qi

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…

Commutative Algebra · Mathematics 2017-09-11 Li Liang

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.

Rings and Algebras · Mathematics 2015-05-08 Tiwei Zhao
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