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Non-simply laced quivers, despite the lack of complete Lagrangian descriptions, play an important role in characterising moduli spaces of supersymmetric field theories. Notably, the moduli space of instantons in non-simply laced gauge…

High Energy Physics - Theory · Physics 2025-02-28 Julius F. Grimminger , William Harding , Noppadol Mekareeya

The category of finite dimensional (type 1) representations of a quantum affine algebra $U_q(\hat{{\mathfrak g}})$ is not semisimple. However, as any abelian category with finite-length objects, it admits a unique decomposition into a…

Quantum Algebra · Mathematics 2007-05-23 Pavel I. Etingof , Adriano A. Moura

Let k be a field of arbitrary characteristic and let Q be a quiver of finite representation type. In this paper we prove that if M is an indecomposable kQ-module then the universal deformation ring of M over kQ is isomorphic to k.

Representation Theory · Mathematics 2016-04-05 Roberto C. Soto , Daniel J. Wackwitz

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

Introduced in arXiv:2211.12606, biquandle arrow weight invariants are enhancements of the biquandle counting invariant for oriented virtual and classical knots defined from biquandle-colored Gauss diagrams using a tensor over an abelian…

Geometric Topology · Mathematics 2025-01-30 Sam Nelson , Migiwa Sakurai

We study a family of three-dimensional Lie algebras $L_\mu$ that depend on a continuous parameter $\mu$. We introduce certain quivers, which we denote by $Q_{m,n}$ $(m,n \in \mathbb{Z})$ and $Q_{\infty \times \infty}$, and prove that…

Representation Theory · Mathematics 2014-09-24 Jeffrey Pike

We investigate the (separated) monomorphism category $\operatorname{mono}(Q,\Lambda)$ of a quiver $Q$ over an Artin algebra $\Lambda$. We construct an epivalence from $\overline{\operatorname{mono}}(Q,\Lambda)$ to…

Representation Theory · Mathematics 2024-09-09 Nan Gao , Julian Külshammer , Sondre Kvamme , Chrysostomos Psaroudakis

Let G be a connected reductive group defined over a finite field F_q. We give a parametrization of the irreducible representations of G(F_q) in terms of (twisted) categorical centres of various monoidal categories associated to G. (Results…

Representation Theory · Mathematics 2016-12-20 G. Lusztig

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 give inductive conditions that characterize the Schubert positions of subrepresentations of a general quiver representation. Our results generalize Belkale's criterion for the intersection of Schubert varieties in Grassmannians and…

Algebraic Geometry · Mathematics 2023-12-05 Velleda Baldoni , Michèle Vergne , Michael Walter

We propose a new non-commutative generalization of the representation variety and the character variety of a knot group. Our strategy is to reformulate the construction of the algebra of functions on the space of representations in terms of…

Geometric Topology · Mathematics 2022-12-01 Jun Murakami , Roland van der Veen

We prove, as claimed by A.Carboni and P.T.Johnstone, that the category of non-unital polygraphs, i.e. polygraphs where the source and target of each generator are not identity arrows, is a presheaf category. More generally we develop a new…

Category Theory · Mathematics 2018-09-27 Simon Henry

We study quivers in the context of matrix models. We introduce chains of generalized Konishi anomalies to write the quadratic and cubic equations that constrain the resolvents of general affine and non-affine quiver gauge theories, and give…

High Energy Physics - Theory · Physics 2009-11-10 Roberto Casero , Enrico Trincherini

A systematic study of holomorphic gauge invariant operators in general $\mathcal{N}=1$ quiver gauge theories, with unitary gauge groups and bifundamental matter fields, was recently presented in [1]. For large ranks a simple counting…

High Energy Physics - Theory · Physics 2014-12-19 Paolo Mattioli , Sanjaye Ramgoolam

In this paper, we classify irreducible representations of affine group superschemes over fields $F$ of characteristic not two in terms of those over a separable closure $F^{\mathrm{sep}}$ and their Galois twists. We also compute the…

Representation Theory · Mathematics 2024-12-30 Takuma Hayashi

In this paper, we study and describe the universal Poisson deformation space of hypertoric varieties concretely. In the first application, we show that affine hypertoric varieties as conical symplectic varieties are classified by the…

Algebraic Geometry · Mathematics 2021-10-13 Takahiro Nagaoka

We generalize permutative representations of the Cuntz algebras for the \cka\ $\coa$ for any $A$. We characterize cyclic permutative representations by notions of cycle and chain, and show their existence and uniqueness. We show necessary…

Operator Algebras · Mathematics 2007-05-23 Katsunori Kawamura

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

We show that the non-trivially associated tensor category constructed from left coset representatives of a subgroup of a finite group is a modular category. Also we give a definition of the character of an object in a ribbon category which…

Quantum Algebra · Mathematics 2007-05-23 M. M. Al-Shomrani , E. J. Beggs

Let $X$ be a variety with an action by an algebraic group $G$. In this paper we discuss various properties of $G$-equivariant $D$-modules on $X$, such as the decompositions of their global sections as representations of $G$ (when $G$ is…

Algebraic Geometry · Mathematics 2019-04-11 András C. Lőrincz , Uli Walther