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We classify mutation-finite cluster algebras with arbitrary coefficients of geometric type.

Combinatorics · Mathematics 2023-08-29 Anna Felikson , Pavel Tumarkin

In this article we study injective representations of infinite quivers. We classify the indecomposable injective representations of trees and then describe Gorenstein injective and projective representations of barren trees.

Rings and Algebras · Mathematics 2007-05-23 E. Enochs , S. Estrada , J. R. Garcia-Rozas

In this paper we describe a family of isomorphism invariants of a finitely generated Coxeter group W. Each of these invariants is the isomorphism type of a quotient group W/N of W by a characteristic subgroup N. The virtue of these…

Group Theory · Mathematics 2007-05-23 Michael Mihalik , John Ratcliffe , Steven Tschantz

We have two parallel goals of this paper. First, we investigate and construct cofree coalgebras over $n$-representations of quivers, limits and colimits of $n$-representations of quivers, and limits and colimits of coalgebras in the…

Representation Theory · Mathematics 2018-09-25 Adnan H. Abdulwahid

We introduce the notion of (twisted) quiver representations in abelian categories and study the category of such representations. We construct standard resolutions and coresolutions of quiver representations and study basic homological…

Representation Theory · Mathematics 2018-12-03 Sergey Mozgovoy

We extend recent work of the third author and Kouloukas by constructing deformations of integrable cluster maps corresponding to the Dynkin types $A_{2N}$, lifting these to higher-dimensional maps possessing the Laurent property and…

Exactly Solvable and Integrable Systems · Physics 2026-04-14 Jan E. Grabowski , Andrew N. W. Hone , Wookyung Kim

In this paper we prove an identity in terms of generating functions which enables us to calculate the numbers of isomorphism classes of absolutely indecomposable semistable representations of quivers over finite fields.

Representation Theory · Mathematics 2021-10-27 Jiuzhao Hua

We develop a mutation theory for quivers with oriented 2-cycles using a structure called a homotopy, defined as a normal subgroupoid of the quiver's fundamental groupoid. This framework extends Fomin-Zelevinsky mutations of 2-acyclic…

Combinatorics · Mathematics 2026-01-07 Fang Li , Siyang Liu , Lang Mou , Jie Pan

To a quiver with involution, we show that there is an algebra homomorphism from the corresponding shifted twisted Yangian to the quantized Coulomb branch algebra of the 3d $\mathcal{N}=4$ involution-fixed part of the quiver gauge theory in…

Representation Theory · Mathematics 2026-01-05 Zichang Wang

This is an expository paper which has two parts. In the first part, we study quiver varieties of affine $A$-type from a combinatorial point of view. We present a combinatorial method for obtaining a closed formula for the generating…

Algebraic Geometry · Mathematics 2017-07-07 Shigeyuki Fujii , Satoshi Minabe

In this paper, we introduce multi-layer quiver and show how to construct an $(n+1)$-slice algebras of infinite type from an $n$-slice algebra of infinite type using the bound quivers. This leads to constructing $(n+1)$-slice algebras of…

Representation Theory · Mathematics 2022-06-01 Jin Yun Guo , Yanping Hu , Deren Luo

This is a survey article for "Handbook of Linear Algebra", 2nd ed., Chapman & Hall/CRC, 2014. An informal introduction to representations of quivers and finite dimensional algebras from a linear algebraist's point of view is given. The…

Representation Theory · Mathematics 2013-12-31 Roger A. Horn , Vladimir V. Sergeichuk

We prove that certain quiver varieties are irreducible and therefore are isomorphic to Hilbert schemes of points of the total spaces of the bundles $\mathcal O_{\mathbb P^1}(-n)$ for $n \ge 1$.

Algebraic Geometry · Mathematics 2021-10-12 Claudio Bartocci , Ugo Bruzzo , Valeriano Lanza , Claudio L. S. Rava

We define mutation on coloured quivers associated to tilting objects in higher cluster categories. We show that this operation is compatible with the mutation operation on the tilting objects. This gives a combinatorial approach to tilting…

Representation Theory · Mathematics 2008-09-20 Aslak Bakke Buan , Hugh Thomas

We incorporate quandle cocycle information into the quandle coloring quivers we defined in arXiv:1807.10465 to define weighted directed graph-valued invariants of oriented links we call \textit{quandle cocycle quivers}. This construction…

Geometric Topology · Mathematics 2019-04-22 Karina Cho , Sam Nelson

The quiver Hopf algebras are classified by means of ramification systems with irreducible representations. This leads to the classification of Nichols algebras over group algebras and pointed Hopf algebras of type one.

Quantum Algebra · Mathematics 2013-03-25 Shouchuan Zhang , Hui-Xiang Chen , Yao-Zhong Zhang

We consider representation spaces of quivers, together with their base change action, and classify the spherical varieties among them.

Representation Theory · Mathematics 2025-09-29 Jennifer Müller , Markus Reineke

We describe noncommutative desingularizations of determinantal varieties, determinantal varieties defined by minors of generic symmetric matrices, and pfaffian varieties defined by pfaffians of generic anti-symmetric matrices. For maximal…

Algebraic Geometry · Mathematics 2019-11-21 Jerzy Weyman , Gufang Zhao

We enhance the pointed quandle counting invariant of linkoids through the use of quivers analogously to quandle coloring quivers. This allows us to generalize the in-degree polynomial invariant of links to linkoids. Additionally, we…

Algebraic Topology · Mathematics 2025-10-15 Jose Ceniceros , Max Klivans

A hereditary property of quivers is a property preserved by restriction to any full subquiver. Similarly, a mutation-invariant property of quivers is a property preserved by mutation. Using forks, a class of quivers developed by M.…

Combinatorics · Mathematics 2024-01-29 Tucker J. Ervin