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We study the specialization of the type A nonsymmetric Macdonald polynomials at $t=0$ based on the combinatorial formula of Haglund, Haiman, and Loehr. We prove that this specialization expands nonnegatively into the fundamental slide…

Combinatorics · Mathematics 2020-03-05 Sami Assaf

We give a twining character formula for Demazure modules.

Representation Theory · Mathematics 2007-05-23 Daisuke Sagaki

We introduce polynomials that represent general degeneracy loci for maps of vector bundles. These polynomials specialize to the known classical and quantum forms of single and double Schubert polynomials. This is the final version of the…

alg-geom · Mathematics 2008-02-03 William Fulton

We consider Tuenter polynomials as linear combinations of descending factorials and show that coefficients of these linear combinations are expressed via a Catalan triangle of numbers. We also describe a triangle of coefficients in terms of…

Combinatorics · Mathematics 2016-06-15 Andrei K. Svinin

Extending the main result of Part 1, in the first part of this paper we show that every quiver Grassmannian of a representation of a quiver of extended Dynkin type $D$ has a decomposition into affine spaces. In the case of real root…

Representation Theory · Mathematics 2017-09-18 Oliver Lorscheid , Thorsten Weist

Character expansion is introduced and explicitly constructed for the (non-colored) HOMFLY polynomials of the simplest knots. Expansion coefficients are not the knot invariants and can depend on the choice of the braid realization. However,…

Quantum Algebra · Mathematics 2015-06-03 A. Mironov , A. Morozov , An. Morozov

Motivated by the question of whether Chow polynomials of matroids have only real roots, this article revisits the known relationship between Eulerian polynomials and the Hilbert series of Chow rings of permutohedral varieties. This is done…

Combinatorics · Mathematics 2024-10-21 Basile Coron

The key polynomials, the Demazure atoms, the Schubert polynomials, and even the Schur functions can be defined using divided difference operator. In 2000, Hivert introduced a quasisymmetric analog of the divided difference operator. In…

Combinatorics · Mathematics 2024-06-05 Angela Hicks , Elizabeth Niese

The purpose of this article is to study determinants of matrices which are known as generalized Pascal triangles (see [1]). We present a factorization by expressing such a matrix as a product of a unipotent lower triangular matrix, a…

Rings and Algebras · Mathematics 2017-05-16 A. R. Moghaddamfar , S. M. H. Pooya

A class of generalized complex polynomials of Hermite type, suggested by a special magnetic Schrodinger operator, is introduced and some related basic properties are discussed.

Classical Analysis and ODEs · Mathematics 2015-05-13 Allal Ghanmi

In this paper we present a generalization of the classical Hermite polynomials to the framework of Clifford-Dunkl operators. Several basic properties, such as orthogonality relations, recurrence formulae and associated differential…

Complex Variables · Mathematics 2011-02-11 Minggang Fei , Paula Cerejeiras , Uwe Kähler

We rewrite the recently proposed differential expansion formula for HOMFLY polynomials of the knot $4_1$ in arbitrary rectangular representation $R=[r^s]$ as a sum over all Young sub-diagrams $\lambda$ of $R$ with extraordinary simple…

High Energy Physics - Theory · Physics 2017-10-26 Ya. Kononov , A. Morozov

This article is devoted to the study of a higher-dimensional generalisation of de Rham epsilon lines. To a holonomic $D$-module $M$ on a smooth variety $X$ and a generic tuple of $1$-form $(\nu_1,\dots,\nu_n)$, we associate a point of the…

Algebraic Geometry · Mathematics 2018-07-10 Michael Groechenig

For a minimal affinization over a quantum loop algebra of type BC, we provide a character formula in terms of Demazure operators and multiplicities in terms of crystal bases. We also provide a simple formula for the limit of characters.…

Quantum Algebra · Mathematics 2014-04-22 Katsuyuki Naoi

We derive a formula expanding the bracket with respect to a natural deformation parameter. The expansion is in terms of a two-variable polynomial algebra of diagram resolutions generated by basic operations involving the Goldman bracket. A…

Geometric Topology · Mathematics 2007-09-09 Nikos Apostolakis , Uwe Kaiser

We continue the study of straightening maps for the family of polynomials of degree $d \ge 3$. The notion of straightening map is originally introduced by Douady and Hubbard to study relationship between polynomial-like renormalizations and…

Dynamical Systems · Mathematics 2018-06-01 Hiroyuki Inou

We find families of simplicial complexes where the simplicial chromatic polynomials defined by Cooper--de Silva--Sazdanovic \cite{CdSS} are Hilbert series of Stanley--Reisner rings of auxiliary simplicial complexes. As a result, such…

Combinatorics · Mathematics 2022-09-19 Soohyun Park

What polynomial in the coefficients of a system of algebraic equations should be called its discriminant? We prove a package of facts that provide a possible answer. Let us call a system typical, if the homeomorphic type of its set of…

Algebraic Geometry · Mathematics 2013-08-22 Alexander Esterov

We define tensors, corresponding to cubic polynomials, which have the same exponent $\omega$ as the matrix multiplication tensor. In particular, we study the symmetrized matrix multiplication tensor $sM_n$ defined on an $n\times n$ matrix…

Algebraic Geometry · Mathematics 2018-04-04 Luca Chiantini , Jonathan D. Hauenstein , Christian Ikenmeyer , J. M. Landsberg , Giorgio Ottaviani

The Macdonald polynomials expanded in terms of a modified Schur function basis have coefficients called the $q,t$-Kostka polynomials. We define operators to build standard tableaux and show that they are equivalent to creation operators…

Combinatorics · Mathematics 2007-05-23 L. Lapointe , J. Morse