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Let $A$ and $B$ be rings, $U$ a $(B,A)$-bimodule and $T=\begin{pmatrix} A&0\\U&B \end{pmatrix}$ the triangular matrix ring. In this paper, several notions in relative Gorenstein algebra over a triangular matrix ring are investigated. We…

Rings and Algebras · Mathematics 2021-06-22 Driss Bennis , Rachid El Maaouy , Juan Ramón García Rozas , Luis Oyonarte

Let $A$, $B$ be two rings and $T=\left(\begin{smallmatrix} A & M \\ 0 & B \\\end{smallmatrix}\right)$ with $M$ an $A$-$B$-bimodule. We first construct a semi-complete duality pair $\mathcal{D}_{T}$ of $T$-modules using duality pairs in…

Category Theory · Mathematics 2022-03-01 Haiyu Liu , Rongmin Zhu

In \cite{AB}, Auslander and Bridger introduced Gorenstein projective modules and only about 40 years after their introduction a finite dimensional algebra $A$ was found in \cite{JS} where the subcategory of Gorenstein projective modules did…

Representation Theory · Mathematics 2023-10-30 Rene Marczinzik

In a previous paper, math.AT/0304079, Auslander-Reiten triangles and quivers were introduced into algebraic topology. This paper shows that over a Poincare duality space, each component of the Auslander-Reiten quiver is isomorphic to…

Algebraic Topology · Mathematics 2007-05-23 Peter Jorgensen

We apply the super duality formalism recently developed by the authors to obtain new equivalences of various module categories of general linear Lie superalgebras. We establish the correspondence of standard, tilting, and simple modules, as…

Representation Theory · Mathematics 2012-12-19 Shun-Jen Cheng , Ngau Lam , Weiqiang Wang

Auslander and Ringel-Tachikawa have shown that for an artinian ring R of finite representation type, every R-module is the direct sum of finitely generated indecomposable R-modules. In this paper, we will adapt this result to finite…

Representation Theory · Mathematics 2009-03-31 Audrey Moore

A duality theorem for the stable module category of representations of a finite group scheme is proved. One of its consequences is an analogue of Serre duality, and the existence of Auslander-Reiten triangles for the $\mathfrak{p}$-local…

Representation Theory · Mathematics 2019-02-20 Dave Benson , Srikanth B. Iyengar , Henning Krause , Julia Pevtsova

We study persistence modules defined on commutative ladders. This class of persistence modules frequently appears in topological data analysis, and the theory and algorithm proposed in this paper can be applied to these practical problems.…

Algebraic Topology · Mathematics 2015-04-21 Emerson G. Escolar , Yasuaki Hiraoka

For a hereditary, finite-dimensional algebra $A$ the Coxeter transformation extends the action of the Auslander--Reiten translation on the non-projective indecomposable modules to a linear endomorphism of the Grothendieck group of the…

Representation Theory · Mathematics 2026-05-14 Carlo Klapproth

For a finitely generated module $ M $ over a commutative Noetherian ring $R$, we settle the Auslander-Reiten conjecture when at least one of ${\rm Hom}_R(M,R)$ and ${\rm Hom}_R(M,M)$ has finite injective dimension. A number of new…

Commutative Algebra · Mathematics 2024-02-01 Dipankar Ghosh , Ryo Takahashi

For a (right and left) coherent ring $A$, we show that there exists a duality between homotopy categories ${\mathbb{K}}^{{\rm{b}}}({\rm mod}{\mbox{-}}A^{{\rm op}})$ and ${\mathbb{K}}^{{\rm{b}}}({\rm mod}{\mbox{-}}A)$. If $A=\Lambda$ is an…

Representation Theory · Mathematics 2017-05-29 J. Asadollahi , N. Asadollahi , R. Hafezi , R. Vahed

We study the bounded derived category $\D^b(\Rmod)$ of a left Noetherian ring $R$. We give a version of the Generalized Auslander-Reiten Conjecture for $\D^b(\Rmod)$ that is equivalent to the classical statement for the module category and…

Representation Theory · Mathematics 2012-09-12 Kosmas Diveris , Marju Purin

Let $\Lambda$ be a $\mathbb{Z}$-graded artin algebra. Two classical results of Gordon and Green state that if $\Lambda$ has only finitely many indecomposable gradable modules, up to isomorphism, then $\Lambda$ has finite representation…

Representation Theory · Mathematics 2018-08-07 Alex Dugas

In this paper, by using functor rings and functor categories, we study finiteness and purity of subcategories of the module categories. We give a characterisation of contravariantly finite resolving subcategories of the module category of…

Representation Theory · Mathematics 2022-03-08 Ziba Fazelpour , Alireza Nasr-Isfahani

We study which algebras have tilting modules that are both generated and cogenerated by projective-injective modules. Crawley-Boevey and Sauter have shown that Auslander algebras have such tilting modules; and for algebras of global…

Representation Theory · Mathematics 2017-10-04 Van C. Nguyen , Idun Reiten , Gordana Todorov , Shijie Zhu

We construct Nakayama functors on proper abelian subcategories of triangulated categories with a Serre functor using approximation theory. This, in turn, allows for the construction of Auslander-Reiten translates. As a result, we prove that…

Representation Theory · Mathematics 2025-08-06 David Nkansah

The homological theory of Auslander-Platzeck-Todorov on idempotent ideals laid much of the groundwork for higher Auslander-Reiten theory, providing the key technical lemmas for both higher Auslander correspondence as well as the…

Representation Theory · Mathematics 2021-02-04 Jordan McMahon

If a module $M$ has finite projective dimension, then the Ext modules of $M$ against any other module eventually vanish and the projective dimension of $M$ gives a uniform bound for this vanishing. For modules of infinite projective…

Commutative Algebra · Mathematics 2025-09-24 Andrew J. Soto Levins

This paper investigates the Auslander-Gorenstein property for monomial algebras. First, we prove that every Auslander-Gorenstein monomial algebra is a string algebra and present a simple combinatorial classification of Auslander-Gorenstein…

Representation Theory · Mathematics 2025-08-12 Viktória Klász

We introduce the concept of an $n$-minimal Auslander--Gorenstein category and $n$-precluster tilting subcategory. With this, we create an analog of the higher Auslander--Solberg correspondence (arXiv:1608.04179) for exact categories. Our…

Representation Theory · Mathematics 2023-05-09 Jacob Fjeld Grevstad
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