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The one-variable non-symmetric Wilson polynomials are shown to coincide with the Bannai-Ito polynomials. The isomorphism between the corresponding degenerate double affine Hecke algebra of type $(C_1^{\vee}, C_1)$ and the Bannai-Ito algebra…

Classical Analysis and ODEs · Mathematics 2017-02-15 Vincent X. Genest , Luc Vinet , Alexei Zhedanov

Motivated by applications to the fractional quantum Hall effect and, in particular, to the Bernevig-Haldane conjectures, we investigates the behavior of Macdonald polynomials under specializations of the form q a t b = 1. Our main focus is…

Combinatorics · Mathematics 2026-01-21 Christophe Carré , Ulysse Goncalves , Jean-Gabriel Luque

We prove that supports of non-symmetric Macdonald polynomials are $M$-convex. As a consequence, we resolve a 2019 conjecture of Monical, Tokcan, and Yong that they have the saturated Newton polytope property. As a corollary we show that…

Combinatorics · Mathematics 2026-03-24 Milo Bechtloff Weising , Alexander E. Black

We consider multiple orthogonal polynomials corresponding to two Macdonald functions (modified Bessel functions of the second kind), with emphasis on the polynomials on the diagonal of the Hermite-Pad\'e table. We give some properties of…

Classical Analysis and ODEs · Mathematics 2013-10-16 W. Van Assche , S. B. Yakubovich

We investigate the homogeneous symmetric Macdonald polynomials $P_\lambda(\X;q,t)$ for the specialization $t=q^k$. We show an identity relying the polynomials $P_\lambda(\X;q,q^k)$ and $P_\lambda(\frac{1-q}{1-q^k}\X;q,q^k)$. As a…

Combinatorics · Mathematics 2010-05-14 Jean-Gabriel Luque

A generalization of the Macdonald polynomials depending upon both commuting and anticommuting variables has been introduced recently. The construction relies on certain orthogonality and triangularity relations. Although many…

Mathematical Physics · Physics 2013-07-04 O. Blondeau-Fournier , P. Desrosiers , L. Lapointe , P. Mathieu

Motivated by a question in Schubert calculus, we study the interplay of quasisymmetric polynomials with the divided symmetrization operator, which was introduced by Postnikov in the context of volume polynomials of permutahedra. Divided…

Combinatorics · Mathematics 2020-05-05 Philippe Nadeau , Vasu Tewari

In symmetric Macdonald polynomial theory the Pieri formula gives the branching coefficients for the product of the rth elementary symmetric function and the Macdonald polynomial. In this paper we give the nonsymmetric analogues for the…

Quantum Algebra · Mathematics 2008-07-03 Wendy Baratta

We investigate certain bases of Hecke algebras defined by means of the Yang-Baxter equation, which we call Yang-Baxter bases. These bases are essentially self-adjoint with respect to a canonical bilinear form. In the case of the degenerate…

q-alg · Mathematics 2008-02-03 Alain Lascoux , Bernard Leclerc , Jean-Yves Thibon

For an almost split Kac-Moody group G over a local non-archimedean field, the last two authors constructed a spherical Hecke algebra H (over the complex numbers C, say) and its Satake isomorphism with the commutative algebra of Weyl…

Representation Theory · Mathematics 2019-02-20 Nicole Bardy-Panse , Stéphane Gaussent , Guy Rousseau

Macdonald superpolynomials provide a remarkably rich generalization of the usual Macdonald polynomials. The starting point of this work is the observation of a previously unnoticed stability property of the Macdonald superpolynomials when…

Mathematical Physics · Physics 2013-04-10 O. Blondeau-Fournier , L. Lapointe , P. Mathieu

In this paper we present a Mathematica notebook for computing nonsymmetric and interpolation Macdonald polynomials. We present the new recursive generation algorithm employed within the notebook and the theory required for its development.…

Quantum Algebra · Mathematics 2012-01-24 Wendy Baratta

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 show how a certain limit of the nonsymmetric Macdonald polynomials appears in the representation theory of semisimple groups over p--adic fields as matrix coefficients for the unramified principal series representations. The result is…

Quantum Algebra · Mathematics 2007-05-23 Bogdan Ion

We study non-symmetric Jacobi polynomials of type $BC_{1}$ by means of vector-valued and matrix-valued orthogonal polynomials. The interpretation as matrix-valued orthogonal polynomials yields a new expression of the non-symmetric Jacobi…

Classical Analysis and ODEs · Mathematics 2025-09-17 Max van Horssen , Maarten van Pruijssen

We construct a novel family of difference-permutation operators and prove that they are diagonalized by the wreath Macdonald $P$-polynomials; the eigenvalues are written in terms of elementary symmetric polynomials of arbitrary degree. Our…

Quantum Algebra · Mathematics 2025-09-16 Daniel Orr , Mark Shimozono , Joshua Jeishing Wen

We introduce generalization of famous Macdonald polynomials for the case of super-Young diagrams that contain half-boxes on the equal footing with full boxes. These super-Macdonald polynomials are polynomials of extended set of variables:…

High Energy Physics - Theory · Physics 2024-08-09 Dmitry Galakhov , Alexei Morozov , Nikita Tselousov

In the intersection of the theories of nonsymmetric Jack polynomials in $N$ variables and representations of the symmetric groups $\mathcal{S}_{N}$ one finds the singular polynomials. For certain values of the parameter $\kappa$ there are…

Representation Theory · Mathematics 2020-04-22 Charles F. Dunkl

We introduce and study deformations of finite-dimensional modules over rational Cherednik algebras. Our main tool is a generalization of usual harmonic polynomials for Coxeter groups -- the so-called quasiharmonic polynomials. A surprising…

Representation Theory · Mathematics 2007-08-15 Arkady Berenstein , Yurii Burman

It is shown that the deformed Macdonald-Ruijsenaars operators can be described as the restrictions on certain affine subvarieties of the usual Macdonald-Ruijsenaars operator in infinite number of variables. The ideals of these varieties are…

Quantum Algebra · Mathematics 2008-02-22 A. N. Sergeev , A. P. Veselov