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For an acyclic quiver $Q$ and a finite-dimensional algebra $A$, we give a unified form of the indecomposable injective objects in the monomorphism category ${\rm Mon}(Q,A)$ and prove that ${\rm Mon}(Q, A)$ has enough injective objects. As…

Representation Theory · Mathematics 2013-08-08 Keyan Song , Zhanping Wang , Yuehui Zhang

We introduce the notion of relative singularity category with respect to any self-orthogonal subcategory $\omega$ of an abelian category. We introduce the Frobenius category of $\omega$-Cohen-Macaulay objects, and under some reasonable…

Rings and Algebras · Mathematics 2011-02-15 Xiao-Wu Chen

A well-known theorem of Buchweitz provides equivalences between three categories: the stable category of Gorenstein projective modules over a Gorenstein algebra, the homotopy category of acyclic complexes of projectives, and the singularity…

Representation Theory · Mathematics 2021-11-16 Jeremy R. B. Brightbill , Vanessa Miemietz

Let (S; n) be a commutative noetherian local ring and let w in n be non-zero divisor. This paper is concerned with the two categories of monomorphisms between finitely generated (Gorenstein) projective S-modules, such that their cokernels…

Representation Theory · Mathematics 2024-09-17 Abdolnaser Bahlekeh , Fahimeh Sadat Fotouhi , Mohammad Amin Hamlehdari , Shokrollah Salarian

Let ($S, \mathfrak{n})$ be a commutative noetherian local ring and let $\omega\in\mathfrak{n}$ be non-zero divisor. This paper is concerned with the category of monomorphisms between finitely generated Gorenstein projective S-modules, such…

Representation Theory · Mathematics 2024-06-06 Abdolnaser Bahlekeh , Fahimeh Sadat Fotouhi , Armin Nateghi , Shokrollah Salarian

We investigate the stabilization $\mathcal{S}$ of the module category over an artinian ring $\Lambda$ by formally inverting the tensor endofunctor given by the bimodule of relative noncommutative differential $1$-forms. It turns out that…

Representation Theory · Mathematics 2025-09-03 Xiao-Wu Chen , Zhengfang Wang

We give sufficient conditions for a Frobenius category to be equivalent to the category of Gorenstein projective modules over an Iwanaga-Gorenstein ring. We then apply this result to the Frobenius category of special Cohen-Macaulay modules…

Representation Theory · Mathematics 2019-02-20 Osamu Iyama , Martin Kalck , Michael Wemyss , Dong Yang

Let $\X$ be a resolving subcategory of an abelian category. In this paper we investigate the singularity category $\ds(\underline\X)=\db(\mod\underline\X)/\kb(\proj(\mod\underline\X))$ of the stable category $\underline\X$ of $\X$. We…

Commutative Algebra · Mathematics 2016-05-30 Hiroki Matsui , Ryo Takahashi

Buchweitz related the singularity category of a (strongly) Gorenstein ring and the stable category of maximal Cohen-Macaulay modules by a triangle equivalence. We phrase his result in a relative categorical setting based on N-complexes…

Category Theory · Mathematics 2024-11-01 Jonas Frank , Mathias Schulze

We give a new characterization of silting subcategories in the stable category of a Frobenius extriangulated category, generalizing the result of Di et al. (J. Algebra 525 (2019) 42-63) about the Auslander-Reiten type correspondence for…

Rings and Algebras · Mathematics 2023-05-02 Yajun Ma , Nanqing Ding , Yafeng Zhang , Jiangsheng Hu

Tilting objects play a key role in the study of triangulated categories. A famous result due to Iyama and Takahashi asserts that the stable categories of graded maximal Cohen-Macaulay modules over quotient singularities have tilting…

Rings and Algebras · Mathematics 2016-01-28 Izuru Mori , Kenta Ueyama

For a self-orthogonal module $T$, the relation between the quotient triangulated category $D^b(A)/K^b({\rm add} T)$ and the stable category of the Frobenius category of $T$-Cohen-Macaulay modules is investigated. In particular, for a…

Representation Theory · Mathematics 2008-09-19 Xiao-Wu Chen , Pu Zhang

We investigate purity within the Frobenius category of Gorenstein flat cotorsion modules, which can be seen as an infinitely generated analogue of the Frobenius category of Gorenstein projective objects. As such, the associated stable…

Representation Theory · Mathematics 2025-05-15 Isaac Bird

We consider the equivalence from the stable module category to a subcategory $\mathcal{L}_A$ of the homotopy category constructed by Kato. This equivalence induces a correspondence between distinguished triangles in the homotopy category…

Representation Theory · Mathematics 2021-09-28 Sebastian Nitsche

We introduce a notion of total acyclicity associated to a subcategory of an abelian category and consider the Gorenstein objects they define. These Gorenstein objects form a Frobenius category, whose induced stable category is equivalent to…

Rings and Algebras · Mathematics 2019-09-13 Lars Winther Christensen , Sergio Estrada , Peder Thompson

Let $\Lambda$ be an arbitrary monomial algebra. We investigate the stable category $\underline{\operatorname{Gproj}}^{\mathbb{Z}}\Lambda$ of graded Gorenstein-projective $\Lambda$-modules and the orbit category…

Representation Theory · Mathematics 2025-06-10 Takahiro Honma , Satoshi Usui

We study a category $\mathcal{C}_2$ of $\mathbb{Z}$-graded MCM modules over the $A_\infty$ curve singularity and demonstrate it has infinite type $A$ cluster combinatorics. In particular, we show that this Frobenius category (or a suitable…

Representation Theory · Mathematics 2022-06-01 Jenny August , Man-Wai Cheung , Eleonore Faber , Sira Gratz , Sibylle Schroll

Let $n$ be a non-negative integer. {Motivated by the universal property of the stable category of Frobenius categories, the authors in \cite{bfss} extended the stabilization of Frobenius categories to $n$-Frobenius categories, and called it…

Representation Theory · Mathematics 2025-03-18 Abdolnaser Bahlekeh , Fahimeh Sadat Fotouhi , Shokrollah Salarian , Atousa Sartipzadeh

We introduce continuous Frobenius categories. These are topological categories which are constructed using representations of the circle over a discrete valuation ring. We show that they are Krull-Schmidt with one indecomposable object for…

Representation Theory · Mathematics 2013-01-22 Kiyoshi Igusa , Gordana Todorov

We investigate the triangulated structure of stable monomorphism categories (filtered chain categories) over a Frobenius category. The high degree of symmetry of linear quivers leads to a plethora of semiorthogonal decompositions into…

Category Theory · Mathematics 2026-04-27 Jonas Frank , Mathias Schulze
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