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We introduce and begin to study Lie theoretical analogs of symplectic reflection algebras for a finite cyclic group, which we call "cyclic double affine Lie algebra". We focus on type A : in the finite (resp. affine, double affine) case, we…

Representation Theory · Mathematics 2009-11-05 Nicolas Guay , David Hernandez , Sergey Loktev

The Yokonuma-Hecke algebras are quotients of the modular framed braid group and they support Markov traces. In this paper, which is sequel to Juyumaya and Lambropoulou (2007), we explore further the structures of the $p$-adic framed braids…

Geometric Topology · Mathematics 2012-10-08 Jesus Juyumaya , Sofia Lambropoulou

We give a $K$-theoretic realization of all affine Hecke algebras with two unequal parameters including exceptional types. This extends the celebrated work of Kazhdan and Lusztig, who gave a $K$-theoretic realization of affine Hecke algebras…

Representation Theory · Mathematics 2025-05-13 Jonas Antor

We introduce and study several affine (=annular in this paper) versions of the classical diagram algebras such as Temperley-Lieb, partition, Brauer, Motzkin, rook Brauer, rook, planar partition, and planar rook algebras. We give generators…

Representation Theory · Mathematics 2025-12-22 David He , Daniel Tubbenhauer

We prove that irreducible representations of the elliptic affine Hecke algebras of Ginzburg, Kapranov, and Vasserot are in one-to-one correspondence with certain nilpotent Higgs bundles on the elliptic curve. The main tool we use is the…

Representation Theory · Mathematics 2021-10-07 Gufang Zhao , Changlong Zhong

Computing polynomial invariants for knots and links using braid representations relies heavily on finding the trace of Hecke algebra elements. There is no easy method known for computing the trace and hence it becomes difficult to compute…

Geometric Topology · Mathematics 2021-01-05 Rama Mishra , Hitesh Raundal

In this paper we prove theorems that describe how the representation theory of the affine Hecke algebra of type A and of related algebras such as the group algebra of the symmetric group are controlled by integrable highest weight…

Representation Theory · Mathematics 2007-05-23 I. Grojnowski

We study canonical intertwining operators between modules of the trigonometric Cherednik algebra, induced from the standard modules of the degenerate affine Hecke algebra. We show that these operators correspond to the Zhelobenko operators…

Representation Theory · Mathematics 2017-03-16 Sergey Khoroshkin , Maxim Nazarov

In this paper, we look at the problem of determining the composition factors for the affine graded Hecke algebra via the computation of Kazhdan-Lusztig type polynomials. We review the algorithms of \cite{L1,L2}, and use them in particular…

Representation Theory · Mathematics 2008-01-11 Dan Ciubotaru

We consider graded Cartan matrices of the symmetric groups and the Iwahori-Hecke algebras of type A, which have entries in the ring $\mathbb Z[v,v^{-1}]$. These matrices may also be interpreted as Gram matrices of the Shapovalov form on…

Representation Theory · Mathematics 2016-05-24 Anton Evseev , Shunsuke Tsuchioka

We consider affine representable algebras, that is, finitely generated algebras over a field that can be embedded into some matrix algebra over a commutative algebra. We show that this algebra can in fact be chosen to be a polynomial…

Rings and Algebras · Mathematics 2021-07-23 Martin Lorenz

We show that ${\rm End}_{\bf U}(V_\lambda\otimes V^{\otimes n})$ is generated by the affine braid group $AB_n$ where ${\bf U}=U_q\mathfrak g(G_2)$, $V$ is its 7-dimensional irreducible representation and $V_\lambda$ is an arbitrary…

Representation Theory · Mathematics 2016-10-24 Lilit Martirosyan , Hans Wenzl

A general procedure of affinization of linear algebra structures is illustrated by the case of Leibniz algebras. Specifically, the definition of an affine Leibniz bracket, that is, a bi-affine operation on an affine space that at each…

Rings and Algebras · Mathematics 2025-07-01 Tomasz Brzeziński , Krzysztof Radziszewski , Brais Ramos Pérez

To a generic holomorphic vector bundle on an algebraic curve and an irreducible finite-dimensional representation of a semisimple Lie algebra, we assign a representation of the corresponding affine Krichever--Novikov algebra in the space of…

Representation Theory · Mathematics 2007-05-23 O. K. Sheinman

We give a presentation of localized affine and degenerate affine Hecke algebras of arbitrary type in terms of weights of the polynomial subalgebra and varied Demazure-BGG type operators. We offer a definition of a graded algebra…

Representation Theory · Mathematics 2014-11-21 Robert Denomme

We first investigate a connected quiver consisting of all dominant maximal weights for an integrable highest weight module in affine type A. This quiver provides an efficient method to obtain all dominant maximal weights. Then, we…

Representation Theory · Mathematics 2023-10-12 Susumu Ariki , Linliang Song , Qi Wang

Let $\ell\in\mathbb{N}$ with $\ell>2$ and $I:=\mathbb{Z}/2\ell\mathbb{Z}$. In this paper we give a new realization of the crystal of affine $\widehat{\mathfrak{sl}}_{\ell}$ using the modular representation theory of the affine Hecke…

Representation Theory · Mathematics 2021-10-05 Huang Lin , Jun Hu

The goal of this paper is to define a new class of objects which we call triple groups and to relate them with Cherednik's double affine Hecke algebras. This has as immediate consequences new descriptions of double affine Weyl and Artin…

Quantum Algebra · Mathematics 2009-09-29 Bogdan Ion , Siddhartha Sahi

Let F be a non-Archimedean local field and let G be a connected reductive affine algebraic F-group. Let I be an Iwahori subgroup of G(F) and denote by H(G; I) the Iwahori-Hecke algebra, i.e. the convolution algebra of complex-valued…

Representation Theory · Mathematics 2015-06-12 Sean Rostami

It is known that the Lawrence-Krammer representation of the Artin group of type $A_{n-1}$ based on the two parameters $t$ and $q$ that was used by Krammer and independently by Bigelow to show the linearity of the braid group on $n$ strands…

Representation Theory · Mathematics 2008-10-30 Claire Isabelle Levaillant