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We prove a version of Gabriel's theorem for (possibly infinite dimensional) representations of infinite quivers. More precisely, we show that the representation theory of quiver $\Omega$ is of unique type (each dimension vector has at most…

Representation Theory · Mathematics 2026-02-17 Nathaniel Gallup , Stephen Sawin

In the context of signed line graphs, this article introduces a modified inflation technique to study strong Gram congruence of non-negative (integral quadratic) unit forms, and uses it to show that weak and strong Gram congruence coincide…

Combinatorics · Mathematics 2023-06-22 Jesus Arturo Jimenez Gonzalez

Machine learning is becoming an increasingly valuable tool in mathematics, enabling one to identify subtle patterns across collections of examples so vast that they would be impossible for a single researcher to feasibly review and analyze.…

Machine Learning · Computer Science 2025-08-05 Jesse He , Helen Jenne , Herman Chau , Davis Brown , Mark Raugas , Sara Billey , Henry Kvinge

In this paper we study the scale-space classification of signals via the maximal set of kernels. We use a geometric approach which arises naturally when we consider parameter variations in scale-space. We derive the Fourier transform…

Classical Analysis and ODEs · Mathematics 2023-05-23 Leon A. Luxemburg , Steven B. Damelin

Cluster algebras have recently become an important player in mathematics and physics. In this work, we investigate them through the lens of modern data science, specifically with techniques from network science and machine learning. Network…

Combinatorics · Mathematics 2024-02-26 Pierre-Philippe Dechant , Yang-Hui He , Elli Heyes , Edward Hirst

Let Q be a Dynkin quiver of type A. The bounded derived category of the path algebra of Q has an autoequivalence given by the composition of the Auslander-Reiten translate and the square of the shift functor. We classify the maximal rigid…

Representation Theory · Mathematics 2011-11-10 Raquel Coelho Simoes

A proper subsemigroup of a semigroup is maximal if it is not contained in any other proper subsemigroup. A maximal subsemigroup of a finite semigroup has one of a small number of forms, as described in a paper of Graham, Graham, and Rhodes.…

Combinatorics · Mathematics 2018-07-09 C. R. Donoven , J. D. Mitchell , W. A. Wilson

We introduce the notion of filtered representations of quivers, which is related to usual quiver representations, but is a systematic generalization of conjugacy classes of $n\times n$ matrices to (block) upper triangular matrices up to…

Algebraic Geometry · Mathematics 2016-07-11 Mee Seong Im

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

An upper bound on degrees of elements of a minimal generating system for invariants of quivers of dimension (2,...,2) is established over a field of arbitrary characteristic and its precision is estimated. The proof is based on the…

Rings and Algebras · Mathematics 2011-07-13 A. A. Lopatin

BPS spectrum with finite number of states are found for higher rank four dimensional N=2 theory engineered from six dimensional A_{N-1} (2,0) theory on a Riemann surface with various kinds of defects. The wall crossing formula is…

High Energy Physics - Theory · Physics 2012-12-03 Dan Xie

We extend Carter's notion of admissible diagrams and attach a "Dynkin-like" diagram to each reduced reflection factorization of an element in a finite Weyl group. We give a complete classification for the diagrams attached to reduced…

Combinatorics · Mathematics 2019-10-22 Patrick Wegener

For a finite dimensional hereditary algebra, we consider: exceptional sequences in the category of finite dimensional modules, silting objects in the bounded derived category, and m-cluster tilting objects in the m-cluster category. There…

Representation Theory · Mathematics 2010-05-04 Aslak Bakke Buan , Idun Reiten , Hugh Thomas

This paper addresses the combinatorial structure of $m$-colored mutation classes. We provide an explicit and purely combinatorial description of the $m$-colored quivers that arise within the $m$-colored mutation class of a quiver of type…

Combinatorics · Mathematics 2025-12-24 Viviana Gubitosi , Pablo Rosero

In this article we construct a maximal set of kernels for a multi-parameter linear scale-space that allow us to construct trees for classification and recognition of one-dimensional continuous signals similar the Gaussian linear scale-space…

Statistics Theory · Mathematics 2023-05-24 Leon A. Luxemburg , Steven B. Damelin

We consider Dynkin algebras, these are the hereditary artin algebras of finite representation type. The indecomposable modules for a Dynkin algebra correspond bijectively to the positive roots of a Dynkin diagram. Given a Dynkin algebra…

Representation Theory · Mathematics 2013-11-26 Mustafa A. A. Obaid , S. Khalid Nauman , Wafa S. Al Shammakh , Wafaa M. Fakieh , Claus Michael Ringel

Cluster algebras, introduced by Fomin and Zelevinsky through the process of quiver mutation, have become central objects in modern algebra and geometry, linking combinatorial constructions with diverse mathematical domains such as…

Combinatorics · Mathematics 2025-12-10 Eric Bucher , Elizabeth Howard

A new density matrix and corresponding quantum kinetic equations are introduced for fermions undergoing coherent evolution either in time (coherent particle production) or in space (quantum reflection). A central element in our derivation…

High Energy Physics - Phenomenology · Physics 2009-02-02 Matti Herranen , Kimmo Kainulainen , Pyry Matti Rahkila

We introduce diagrams for $m$-cluster categories which we call "horizontal" and "vertical" mutation fans. These are analogous to the mutation fans (also known as "semi-invariant pictures" or "scattering diagrams") for the standard ($m=1$)…

Representation Theory · Mathematics 2018-05-18 Kiyoshi Igusa

We discuss quiver gauge models with matter fields based on Dynkin diagrams of Lie superalgebra structures. We focus on A(1,0) case and we find first that it can be related to intersecting complex cycles with genus $g$. Using toric geometry,…

High Energy Physics - Theory · Physics 2012-07-30 A. Belhaj , M. B. Sedra