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Motivated by Maulik-Okounkov stable maps associated to quiver varieties, we define and construct algebraic stable maps on tensor products of representations in the category O of the Borel subalgebra of an arbitrary untwisted quantum affine…

Representation Theory · Mathematics 2024-10-30 David Hernandez

We construct families of commutative (super) algebra objects in the category of weight modules for the unrolled restricted quantum group $\overline{U}_q^H(\mfg)$ of a simple Lie algebra $\mfg$ at roots of unity, and study their categories…

Representation Theory · Mathematics 2020-05-27 Thomas Creutzig , Matthew Rupert

We classify the simple infinite dimensional integrable modules with finite dimensional weight spaces over the quantized enveloping algebra of an untwisted affine algebra. We prove that these are either highest (lowest) weight integrable…

Quantum Algebra · Mathematics 2007-05-23 Vyjayanthi Chari , Jacob Greenstein

A version of quantum orbit method is presented for real forms of equal rank of quantum complex simple groups. A quantum moment map is constructed, based on the canonical isomorphism between a quantum Heisenberg algebra and an algebra of…

q-alg · Mathematics 2008-02-03 Leonid I. Korogodsky

Let $\textbf{U}^+$ be the positive part of the quantum group $\textbf{U}$ associated with a generalized Cartan matrix. In the case of finite type, Lusztig constructed the canonical basis $\textbf{B}$ of $\textbf{U}^+$ via two approaches.…

Representation Theory · Mathematics 2021-08-19 Jie Xiao , Han Xu , Minghui Zhao

We construct a higher level analogue of Dorey's rule, which describe certain surjective morphisms between Kirillov--Reshetikhin (KR) modules over quantum affine algebras. Building on this, we establish a generalized T-system of short exact…

Quantum Algebra · Mathematics 2026-01-21 Se-jin Oh , Travis Scrimshaw

We construct a vertex representation for the quantum toroidal algebra through the quantum general linear algebra. Using a new realization of the quantum general linear algebra we construct vertex operators for root vectors on the basic…

Quantum Algebra · Mathematics 2020-09-08 Yun Gao , Naihuan Jing

The representations of the quantum toroidal algebras have been widely studied by many authors. However, no one has constructed some finite dimensional modules for them while $q$ is generic. In this paper, for all $\mathfrak{g}$-generic $q$,…

Quantum Algebra · Mathematics 2020-03-17 Limeng Xia

The Kauffman bracket skein module $K(M)$ of a 3-manifold $M$ is defined over formal power series in the variable $h$ by letting $A=e^{h/4}$. For a compact oriented surface $F$, it is shown that $K(F \times I)$ is a quantization of the…

q-alg · Mathematics 2008-02-03 Doug Bullock , Charles Frohman , Joanna Kania-Bartoszynska

We construct a new quantization $K_t(\mathcal{O}^{sh}_{\mathbb{Z}})$ of the Grothendieck ring of the category $\mathcal{O}^{sh}_{\mathbb{Z}}$ of representations of shifted quantum affine algebras (of simply-laced type). We establish that…

Representation Theory · Mathematics 2025-07-08 Francesca Paganelli

We consider imaginary Verma modules for quantum affine algebra $U_q(\hat{\mathfrak{sl}(2)})$ and construct Kashiwara type operators and the Kashiwara algebra $\mathcal K_q$. We show that a certain quotient $\mathcal N_q^-$ of…

Representation Theory · Mathematics 2009-03-06 Ben Cox , Vyacheslav Futorny , Kailash C. Misra

To a quiver we associate a finite length monoidal abelian category which categorifies the corresponding preprojective K-theoretic Hall algebra of Varagnolo-Vasserot. The simples in this category provide a (dual) canonical basis of the Hall…

Algebraic Geometry · Mathematics 2025-08-07 Sabin Cautis

Let $\mathfrak{g}$ be a complex simple Lie algebra and $U_q(\hat{\mathfrak{g}})$ the corresponding quantum affine algebra. We prove that every irreducible finite-dimensional $U_q(\hat{\mathfrak{g}})$-module gives rise to a family of…

Representation Theory · Mathematics 2025-11-04 Andrea Appel , Bart Vlaar

Suppose q is a complex number of modulus one and different from 1,-1. Let O(R^2_q) be the *-algebra with two hermitean generators x and y satisfying the relation xy=qyx. Using operator representations of the *-algebra O(R^2_q) on Hilbert…

Operator Algebras · Mathematics 2016-09-07 Konrad Schmuedgen

Let $K\left\langle X \right\rangle$ denote the free associative algebra generated by a set $X = \{x_1, \dots, x_n\}$ over a field $K$ of characteristic $0$. Let $I_p$, for $p \geq 2$, denote the two-sided ideal in $K\left\langle X…

Rings and Algebras · Mathematics 2026-02-24 Elitza Hristova

Let $\mathbb{K}$ denote an algebraically closed field and $A$ a free product of finitely many semisimple associative $\mathbb{K}$-algebras. We associate to $A$ a finite acyclic quiver $\Gamma$ and show that the category of finite…

Representation Theory · Mathematics 2022-05-19 Andrew Buchanan , Ivan Dimitrov , Olivia Grace , Charles Paquette , David Wehlau , Tianyuan Xu

Level-one representations of the quantum affine superalgebra $U_q[\hat{gl(N|N)}]$ associated to the appropriate non-standard system of simple roots and $q$-vertex operators (intertwining operators) associated with the level-one modules are…

Quantum Algebra · Mathematics 2009-10-31 Yao-Zhong Zhang

In the present paper the algebras of functions on quantum homogeneous spaces are studied. The author introduces the algebras of kernels of intertwining integral operators and constructs quantum analogues of the Poisson and Radon transforms…

q-alg · Mathematics 2009-10-28 Leonid L. Vaksman

We prove that the quantum moduli algebra associated to a possibly punctured compact oriented surface and a complex semisimple Lie algebra $\mathfrak{g}$ is a Noetherian and finitely generated ring. If the surface has punctures, we prove…

Quantum Algebra · Mathematics 2025-09-04 Stéphane Baseilhac , Matthieu Faitg , Philippe Roche

Let $X$ be a rational homogeneous space and let $QH^*(X)_{loc}^\times$ be the group of invertible elements in the small quantum cohomology ring of $X$ localised in the quantum parameters. We generalise results of arXiv:math/0609796 and…

Algebraic Geometry · Mathematics 2007-12-20 Pierre-Emmanuel Chaput , Laurent Manivel , Nicolas Perrin