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We characterize right $4$-Nakayama artin algebras which appear naturally in the study of representation-finite artin algebras. For a right $4$-Nakayama artin algebra $\Lambda$, we classify all finitely generated indecomposable right…

Representation Theory · Mathematics 2018-12-19 Alireza Nasr-Isfahani , Mohsen Shekari

In this paper we study right $n$-Nakayama algebras. Right $n$-Nakayama algebras appear naturally in the study of representation-finite algebras. We show that an artin algebra $\Lambda$ is representation-finite if and only if $\Lambda$ is…

Representation Theory · Mathematics 2020-01-07 Alireza Nasr-Isfahani , Mohsen Shekari

This paper aims to study graded modules over a graded algebra $\La$ given by a locally finite quiver with homogeneous relations. By constructing a graded Nakayama functor, we discover a novel approach to establish Auslander-Reiten formulas,…

Representation Theory · Mathematics 2024-10-01 Zetao Lin , Shiping Liu

We prove that the finitistic dimension conjecture, the Gorenstein Symmetry Conjecture, the Wakamatsu-tilting conjecture and the generalized Nakayama conjecture hold for artin algebras which can be realized as endomorphism algebras of…

Representation Theory · Mathematics 2008-04-14 Jiaqun Wei

Enomoto showed for finite dimensional algebras that the classification of exact structures on the category of finitely generated projective modules can be reduced to the classification of 2-regular simple modules. In this article, we give a…

Combinatorics · Mathematics 2020-07-15 Rene Marczinzik , Martin Rubey , Christian Stump

We introduce higher dimensional analogues of the Nakayama algebras from the viewpoint of Iyama's higher Auslander--Reiten theory. More precisely, for each Nakayama algebra $A$ and each positive integer $d$, we construct a finite dimensional…

Representation Theory · Mathematics 2019-09-13 Gustavo Jasso , Julian Külshammer

We describe the representation theory of finitely generated indecomposable modules over artin algebras which do not lie on cycles of indecomposable modules involving homomorphisms from the infinite Jacobson radical of the module category.

Representation Theory · Mathematics 2019-05-14 Piotr Malicki , Andrzej Skowroński

Using the Nakayama duality induced by a Nakayama functor, we provide a novel and concise account of the existence of Auslander-Reiten dualities and almost split sequences in abelian categories with enough projective objects or enough…

Representation Theory · Mathematics 2025-12-25 Zetao Lin , Shiping Liu

We study the structure of the set of all maximal green sequences of a finite-dimensional algebra. There is a natural equivalence relation on this set, which we show can be interpreted in several different ways, underscoring its…

Representation Theory · Mathematics 2023-04-27 Mikhail Gorsky , Nicholas J. Williams

Tachikawa's second conjecture predicts that a finitely generated, orthogonal module over a finite-dimensional self-injective algebra is projective. This conjecture is an important part of the Nakayama conjecture. Our principal motivation of…

Representation Theory · Mathematics 2025-09-08 Hongxing Chen , Changchang Xi

We give a complete classification of all $d$-representation-finite symmetric Nakayama algebras and of all $d$-representation-finite trivial extensions of path algebras of quivers, over an arbitrary field. As a consequence we get a…

Representation Theory · Mathematics 2026-04-08 Erik Darpö , Tor Kringeland

We study universal localisations, in the sense of Cohn and Schofield, for finite dimensional algebras and classify them by certain subcategories of our initial module category. A complete classification is presented in the hereditary case…

Representation Theory · Mathematics 2013-07-25 Frederik Marks

The singularity category of a ring makes only the modules of finite projective dimension vanish among the modules, so the singularity category is expected to characterize a homological property of modules of infinite projective dimension.…

Representation Theory · Mathematics 2022-02-01 Satoshi Usui

We determine the derived representation type of Nakayama algebras and prove that a derived tame Nakayama algebra without simple projective module is gentle or derived equivalent to some skewed-gentle algebra, and as a consequence, we…

Representation Theory · Mathematics 2019-10-04 Viktor Bekkert , Hernan Giraldo , Jose A. Velez-Marulanda

We classify $n$-hereditary monomial algebras in three natural contexts: First, we give a classification of the $n$-hereditary truncated path algebras. We show that they are exactly the $n$-representation-finite Nakayama algebras classified…

Representation Theory · Mathematics 2021-02-01 Mads Hustad Sandøy , Louis-Philippe Thibault

We give a complete description of finitely generated modules over artin algebras which are not the middle of a short chain of modules, using injective and tilting modules over hereditary artin algebras.

Representation Theory · Mathematics 2013-12-13 Alicja Jaworska , Piotr Malicki , Andrzej Skowroński

We study the degree of irreducible morphisms in any Auslander-Reiten component of a finite dimensional algebra over an algebraically closed field. We give a characterization for an irreducible morphism to have finite left (or right) degree.…

Representation Theory · Mathematics 2016-05-11 Patrick Le Meur , Claudia Chaio , Sonia Trepode

$n\mathbb{Z}$-cluster tilting subcategories are an ideal setting for higher dimensional Auslander-Reiten theory. We give a complete classification of $n\mathbb{Z}$-cluster tilting subcategories of module categories of Nakayama algebras. In…

Representation Theory · Mathematics 2022-08-30 Martin Herschend , Sondre Kvamme , Laertis Vaso

This article begins the study of irreducible maps involving finite-dimensional uniserial modules over finite-dimensional associative algebras. We work on the classification of irreducible maps between two uniserials over triangular…

Representation Theory · Mathematics 2007-11-26 Axel Boldt , Ahmad Mojiri

The aim of this note is to outline the structure of the category of the Gorenstein projective modules for a Nakayama algebra. We are going to introduce the resolution quiver of such an algebra. It provides a fast algorithm in order to…

Representation Theory · Mathematics 2013-04-16 Claus Michael Ringel
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