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We consider vertices, a notion originating in local representation theory of finite groups, for the category $\mathcal{O}$ of a rational Cherednik algebra and prove the analogue of the Dipper-Du Conjecture for Hecke algebras of symmetric…

Representation Theory · Mathematics 2021-06-08 Emily Norton

It is shown that the Euler characteristic $\chi_{(\mathcal{H},\mathcal{B},\epsilon_q)}$ of a $\mathbb{Z}[[q]]$-Hecke algebra $\mathcal{H}$ associated with a finitely generated Coxeter group $(W,S)$ coincides with $p_{(W,S)}(q)^{-1}$, where…

Representation Theory · Mathematics 2014-05-26 T. Terragni , Th. Weigel

We determine a formula for the average values of L-series associated to eigenforms at complex values.

Number Theory · Mathematics 2019-06-26 Kamal Khuri-Makdisi , Winfried Kohnen , Wissam Raji

We recast the classical notion of standard tableaux in an alcove-geometric setting and extend these classical ideas to all reduced paths in our geometry. This broader path-perspective is essential for implementing the higher categorical…

Representation Theory · Mathematics 2021-05-28 C. Bowman , A. Cox , A. Hazi , D. Michailidis

In this article, we prove a conjecture of G\"unter K\"ohler on the ambiguity of the quadratic field in the definition of Hecke theta series by deriving it from a similar statement on two-dimensional Galois representations induced from…

Number Theory · Mathematics 2026-01-12 Mahima Kumar , Gabor Wiese

In recent joint work with Wang, we have constructed graded Specht modules for cyclotomic Hecke algebras. In this article, we prove a graded version of the Lascoux-Leclerc-Thibon conjecture, describing the decomposition numbers of graded…

Representation Theory · Mathematics 2009-10-26 Jonathan Brundan , Alexander Kleshchev

We define a new $q$-deformation of Brauer's centralizer algebra which contains Hecke algebras of type $A$ as unital subalgebras. We determine its generic structure as well as the structure of certain semisimple quotients. This is expected…

Quantum Algebra · Mathematics 2012-08-14 Hans Wenzl

This paper classifies the blocks of the cyclotomic Hecke algebras of type G(r,1,n) over an arbitrary field. Rather than working with the Hecke algebras directly we work instead with the cyclotomic Schur algebras. The advantage of these…

Representation Theory · Mathematics 2007-10-02 Sinead Lyle , Andrew Mathas

We establish an embedding from the Hecke algebra associated with the edge contraction of a Coxeter system along an edge to the Hecke algebra associated with the original Coxeter system.

Representation Theory · Mathematics 2024-07-01 Yiqiang Li

We formulate a conjectural Lefschetz formula for locally symmetric spaces of finite volume. The formula can be verified in the compact case and for Riemann surfaces.

Differential Geometry · Mathematics 2007-05-23 Anton Deitmar

Assuming the Riemann hypothesis for $L$-functions attached to primitive Dirichlet characters, modular cusp forms, and their tensor products and symmetric squares, we write down explicit finite sets of Hecke operators that span the Hecke…

Number Theory · Mathematics 2023-12-07 Ben Moore

We study the (complex) Hecke algebra $\mathcal{H}_S(\mathbf{q})$ of a finite simply-laced Coxeter system $(W,S)$ with independent parameters $\mathbf{q} \in \left( \mathbb{C} \setminus\{\text{roots of unity}\} \right)^S$. We construct its…

Representation Theory · Mathematics 2020-01-01 Jia Huang

There exist conjectural formulas on relations between $L$-functions of submotives of Shimura varieties and automorphic representations of the corresponding reductive groups, due to Langlands -- Arthur. In the present paper these formulas…

Algebraic Geometry · Mathematics 2007-05-23 Dmitry Logachev

We study double affine Hecke algebras at roots of unity and their relations with deformed Hilbert schemes.

Representation Theory · Mathematics 2010-04-06 M. Varagnolo , E. Vasserot

Let H(G) be the Hecke algebra of a reductive p-adic group G. We formulate a conjecture for the ideals in the Bernstein decomposition of H(G). The conjecture says that each ideal is geometrically equivalent to an algebraic variety. Our…

Representation Theory · Mathematics 2007-05-23 Anne-Marie Aubert , Paul Baum , Roger Plymen

We generalize the linear relation formula between the square of normalized Hecke eigenforms of weight $k$ and normalized Hecke eigenforms of weight $2k$, to Rankin-Cohen brackets of general degree. As an ingredient of the proof, we also…

Number Theory · Mathematics 2024-05-28 YoungJu Choie , Winfried Kohnen , Yichao Zhang

This report formulates a conjectural combinatorial rule that positively expands Grothendieck polynomials into Lascoux polynomials. It generalizes one such formula expanding Schubert polynomials into key polynomials, and refines another one…

Combinatorics · Mathematics 2021-02-25 Victor Reiner , Alexander Yong

As the reviewer have pointed out, the proof of Roelke Conjecture contains an error. For cofinite groups, we obtain a formula connecting the discrete spectrum of Laplace operator and the resonance spectrum. Using this formula, we give a…

Number Theory · Mathematics 2019-01-25 Dmitry A. Popov

An affine Hecke algebra H contains a large abelian subalgebra A. The center Z of H is the subalgebra of Weyl group invariant elements in A. The natural trace of the affine Hecke algebra can be written as an integral of a rational $n$ form…

Representation Theory · Mathematics 2007-05-23 Eric M. Opdam

We introduce a generalisation $LH_n$ of the ordinary Hecke algebras informed by the loop braid group $LB_n$ and the extension of the Burau representation thereto. The ordinary Hecke algebra has many remarkable arithmetic and representation…

Geometric Topology · Mathematics 2023-05-31 Celeste Damiani , Paul Martin , Eric C. Rowell