Logarithmic concavity of Schur and related polynomials

J Huh, J Matherne, K Mészáros, A St Dizier - Transactions of the American …, 2022 - ams.org
Logarithmic concavity of Schur and related polynomials Page 1 TRANSACTIONS OF THE
AMERICAN MATHEMATICAL SOCIETY Volume 375, Number 6, June 2022, Pages 4411–4427 …

Newton polytopes in algebraic combinatorics

C Monical, N Tokcan, A Yong - Selecta Mathematica, 2019 - Springer
A polynomial has saturated Newton polytope (SNP) if every lattice point of the convex hull of
its exponent vectors corresponds to a monomial. We compile instances of SNP in algebraic …

From generalized permutahedra to Grothendieck polynomials via flow polytopes

K Mészáros, A St Dizier - Algebraic Combinatorics, 2020 - numdam.org
We study a family of dissections of flow polytopes arising from the subdivision algebra. To
each dissection of a flow polytope, we associate a polynomial, called the left-degree …

M-Convexity of Vexillary Grothendieck Polynomials via Bubbling

ES Hafner, K Mészáros, L Setiabrata… - SIAM Journal on Discrete …, 2024 - SIAM
We introduce bubbling diagrams and show that they compute the support of the
Grothendieck polynomial of any vexillary permutation. Using these diagrams, we show that …

On the support of Grothendieck polynomials

K Mészáros, L Setiabrata, AS Dizier - Annals of Combinatorics, 2024 - Springer
Grothendieck polynomials G w of permutations w∈ S n were introduced by Lascoux and
Schützenberger (CR Acad Sci Paris Sér I Math 295 (11): 629–633, 1982) as a set of …

The Newton polytope of the Kronecker product

G Panova, C Zhao - arXiv preprint arXiv:2311.10276, 2023 - arxiv.org
We study the Kronecker product of two Schur functions $ s_\lambda\ast s_\mu $, defined as
the image of the characteristic map of the product of two $ S_n $ irreducible characters. We …

An orthodontia formula for Grothendieck polynomials

K Mészáros, L Setiabrata, A St Dizier - Transactions of the American …, 2022 - ams.org
We give a new operator formula for Grothendieck polynomials that generalizes Magyar's
Demazure operator formula for Schubert polynomials. Our proofs are purely combinatorial …

[PDF][PDF] Newton polytope of good symmetric polynomials

DK Nguyen, GNT Ngoc… - Comptes …, 2023 - comptes-rendus.academie-sciences …
Newton polytope of good symmetric polynomials Page 1 Comptes Rendus Mathématique
Duc-Khanh Nguyen, Nguyen Thi Ngoc Giao, Dang Tuan Hiep and Do Le Hai Thuy Newton …

Lattice polytopes from Schur and symmetric Grothendieck polynomials

M Bayer, B Goeckner, SJ Hong, T McAllister… - arXiv preprint arXiv …, 2020 - arxiv.org
Given a family of lattice polytopes, two common questions in Ehrhart Theory are determining
when a polytope has the integer decomposition property and determining when a polytope …

Polynomials in algebraic combinatorics

C Monical - 2018 - ideals.illinois.edu
A long-standing theme in algebraic combinatorics is to study bases of the rings of symmetric
functions, quasisymmetric functions, and polynomials. Classically, these bases are …