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Related papers: Double affine Hecke algebras at roots of unity

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We review the construction of generalized affine Hecke algebras attached to Bernstein series of both smooth irreducible and enhanced $L$-parameters of $p$-adic reductive groups and apply it to the study of the Howe correspondence.

Representation Theory · Mathematics 2024-09-10 Anne-Marie Aubert

A systematic study of the representation theory of double affine Hecke algebras and related harmonic analysis is started in this paper. Continuing the previous papers we use the technique of intertwining operators to create Macdonald…

q-alg · Mathematics 2008-02-03 Ivan Cherednik

We study a class of representations over the degenerate double affine Hecke algebra of gl_n by an algebraic method. As fundamental objects in this class, we introduce certain induced modules and study some of their properties. In…

Quantum Algebra · Mathematics 2007-05-23 Takeshi Suzuki

In this paper we show that an affine Hecke algebra $H_q$ over complex numbers field with parameter $q\ne 1$ is not isomorphic to the group algebra over complex numbers field of the corresponding extend affine Weyl group if the corresponding…

Quantum Algebra · Mathematics 2011-06-30 Toshiaki Shoji , Nanhua Xi

We investigate deformations of skew group algebras arising from the action of the symmetric group on polynomial rings over fields of arbitrary characteristic. Over the real or complex numbers, Lusztig's graded affine Hecke algebra and…

Representation Theory · Mathematics 2022-05-12 Naomi Krawzik , Anne Shepler

In this article, we give a classification of irreducible completely splittable representations of affine Hecke-Clifford superalgebras $H_n^{\mathrm{aff}}(q)$ when $q^2$ is a primitive $h$-th root of unity. As an application, we derive a…

Representation Theory · Mathematics 2026-05-13 Minjia Chen , Jinkui Wan

We show that affine Hecke algebras of rank two with generic parameters are affine cellular in the sense of Koenig-Xi.

Representation Theory · Mathematics 2011-03-23 Jeremie Guilhot , Vanessa Miemietz

We extract the abstract core of finite homomorphism dualities using the techniques of Heyting algebras and (combinatorial) categories.

Combinatorics · Mathematics 2010-12-09 Jan Foniok , Jaroslav Nesetril , Ales Pultr , Claude Tardif

Two actions of the Hecke algebra of type A on the corresponding polynomial ring are studied. Both are deformations of the natural action of the symmetric group on polynomials, and keep symmetric functions invariant. We give an explicit…

Representation Theory · Mathematics 2007-05-23 Ron M. Adin , Alexander Postnikov , Yuval Roichman

We study the action of the formal affine Hecke algebra on the formal group algebra, and show that the the formal affine Hecke algebra has a basis indexed by the Weyl group as a module over the formal group algebra. We also define a concept…

Rings and Algebras · Mathematics 2015-09-16 Changlong Zhong

Party-Hecke algebras are introduced as a two-parameter deformation of party algebras, where one parameter deforms the party generators and the other deforms the elementary transpositions. We construct a basis for this algebra and show that…

Representation Theory · Mathematics 2026-03-23 Diego Arcis , Jesús Juyumaya

We define and study two new classes of algebras, called higher-level affine wreath product algebras and higher-level affine Frobenius Hecke algebras. They depend on a Frobenius superalgebra and are defined, respectively, as path algebras of…

Representation Theory · Mathematics 2026-05-07 Thomas Moran

We discuss some aspects of the deformed W-algebras W_{q,t}[g]. In particular, we derive an explicit formula for the Kac determinant, and discuss the center when t^2 is a primitive k-th root of unity. The relation of the structure of…

Quantum Algebra · Mathematics 2008-11-26 P. Bouwknegt , K. Pilch

The trigonometric double affine Hecke algebra $\mathbf{H}_c$ for an irreducible root system depends on a family of complex parameters $c$ Given two families of parameters $c$ and $c'$ which differ by integers, we construct the translation…

Representation Theory · Mathematics 2025-07-16 Wille Liu

We study the dual algebras of (discrete) Hopf algebroids. In particular, we understand comodules over a Hopf algebroid as (discrete) modules over its dual algebra.

Rings and Algebras · Mathematics 2026-02-26 Jingbang Guo

We will classify finite dimensional irreducible modules for affine quantum Schur algebras at roots of unity and generalize \cite[(6.5f) and (6.5g)]{Gr80} to the affine case in this paper.

Representation Theory · Mathematics 2012-08-07 Qiang Fu

There are several researches on Lie algebras and Lie superalgebras graded by finite root systems. In this paper, we study Leibniz algebras graded by finite root systems and obtain some results in simply-laced cases.

Representation Theory · Mathematics 2010-06-30 Dong Liu , Naihong Hu

We introduce the notion of extended affine Lie superalgebras and investigate the properties of their root systems. Extended affine Lie algebras, invariant affine reflection algebras, finite dimensional basic classical simple Lie…

Quantum Algebra · Mathematics 2015-02-13 Malihe Yousofzadeh

For the affine Hecke algebra of type A at roots of unity, we make explicit the correspondence between geometrically constructed simple modules and combinatorially constructed simple modules and prove the modular branching rule. The latter…

Representation Theory · Mathematics 2010-04-22 Susumu Ariki , Nicolas Jacon , Cédric Lecouvey

For the affine Hecke algebra of type A at roots of unity, we make explicit the correspondence between geometrically constructed simple modules and combinatorially constructed simple modules and prove the modular branching rule. The latter…

Representation Theory · Mathematics 2010-04-23 Susumu Ariki , Nicolas Jacon , Cédric Lecouvey