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We describe the universal Groebner basis of the ideal of maximal minors and the ideal of $2$-minors of a multigraded matrix of linear forms. Our results imply that the ideals are radical and provide bounds on the regularity. In particular,…

Commutative Algebra · Mathematics 2016-09-01 Aldo Conca , Emanuela De Negri , Elisa Gorla

We establish formulas for the Hilbert series of the Chow ring of a polymatroid using arbitrary building sets. For braid matroids and minimal building sets, our results produce new formulas for the Poincar\'e polynomial of the moduli space…

Combinatorics · Mathematics 2026-03-31 Christopher Eur , Luis Ferroni , Jacob P. Matherne , Roberto Pagaria , Lorenzo Vecchi

We show the direct applicability of the Brouwer fixed point theorem for the existence of equilibrium points and periodic solutions for differential systems on general domains satisfying geometric conditions at the boundary. We develop a…

Classical Analysis and ODEs · Mathematics 2022-03-03 Guglielmo Feltrin , Fabio Zanolin

We present rational Schur algebra $S(n,r,s)$ over an arbitrary ground field $K$ as a quotient of the distribution algebra $Dist(G)$ of the general linear group $G=GL(n)$ by an ideal $I(n,r,s)$ and provide an explicit description of the…

Representation Theory · Mathematics 2024-04-30 František Marko

This paper studies Schauder frames in Banach spaces, a concept which is a natural generalization of frames in Hilbert spaces and Schauder bases in Banach spaces. The associated minimal and maximal spaces are introduced, as are shrinking and…

Functional Analysis · Mathematics 2009-10-20 Rui Liu

This manuscript presents a generalization of the structure of the null space of the Bezout matrix in the monomial basis, see [G. Heinig and K. Rost, Algebraic methods for toeplitz-like matrices and operators, 1984], to an arbitrary basis.…

Rings and Algebras · Mathematics 2014-02-21 Gema M. Diaz-Toca , Mario Fioravanti

The geometric and algebraic theory of monomial ideals and multigraded modules is initiated over real-exponent polynomial rings and, more generally, monoid algebras for real polyhedral cones. The main results include the generalization of…

Commutative Algebra · Mathematics 2025-11-11 Ezra Miller

We extend the notion of Lie bialgebroids for more general bracket structures used in string and M theories. We formalize the notions of calculus and dual calculi on algebroids. We achieve this by reinterpreting the main results of the…

High Energy Physics - Theory · Physics 2023-12-12 Aybike Çatal-Özer , Keremcan Doğan , Cem Yetişmişoğlu

We establish a poset structure on combinatorial bases of multivariate polynomials defined by positive expansions, and study properties common to bases in this poset. Included are the well-studied bases of Schubert polynomials, Demazure…

Combinatorics · Mathematics 2018-08-09 Dominic Searles

Matroids generalize the familiar notion of linear dependence from linear algebra. Following a brief discussion of founding work in computability and matroids, we use the techniques of reverse mathematics to determine the logical strength of…

Logic · Mathematics 2016-04-19 Jeffry L. Hirst , Carl Mummert

The purpose of this paper is twofold. First, we use the motivic Landweber exact functor theorem to deduce that the Bott inverted infinite projective space is homotopy algebraic $K$-theory. The argument is considerably shorther than any…

Algebraic Geometry · Mathematics 2008-10-17 Niko Naumann , Markus Spitzweck , Paul Arne Østvær

In this work, we propose a novel framework for defining the dual structure of a spinor. This construction relies on the basis elements of the Clifford algebra, leading to a covariant structure that embeds the dual. The formulation includes…

Mathematical Physics · Physics 2026-02-26 Rodolfo José Bueno Rogerio , Rogerio Teixeira Cavalcanti , Luca Fabbri

We define two new families of polynomials that generalize permanents and prove upper and lower bounds on their determinantal complexities comparable to the known bounds for permanents. One of these families is obtained by replacing…

Combinatorics · Mathematics 2022-03-01 Tristram Bogart , Juan Andrés Valero

The Schur orthogonality relations are a cornerstone in the representation theory of groups. We utilize a generalization to weak Hopf algebras to provide a new, readily verifiable condition on the skeletal data for deciding whether a given…

Quantum Algebra · Mathematics 2024-02-06 Jacob C. Bridgeman , Laurens Lootens , Frank Verstraete

We study the dependence of graded Betti numbers of monomial ideals on the characteristic of the base field. The examples we describe include bipartite ideals, Stanley--Reisner ideals of vertex-decomposable complexes and ideals with…

Commutative Algebra · Mathematics 2010-09-23 Kia Dalili , Manoj Kummini

We provide a short proof of the theorem that every real multivariate polynomial has a symmetric determinantal representation, which was first proved in J. W. Helton, S. A. McCullough, and V. Vinnikov, Noncommutative convexity arises from…

Complex Variables · Mathematics 2021-01-12 Anthony Stefan , Aaron Welters

For any polynomial representation of the special linear group, the nodes of the corresponding crystal may be indexed by semi-standard Young tableaux. Under certain conditions, the standard Young tableaux occur, and do so with weight 0.…

Combinatorics · Mathematics 2008-04-11 Sami Assaf

In this paper, we give the first combinatorial proof of a rationality scheme for the generating series of maps in positive genus enumerated by both vertices and faces, which was first obtained by Bender, Canfield and Richmond in 1993 by…

Combinatorics · Mathematics 2024-06-18 Marie Albenque , Mathias Lepoutre

The paper describes the algebraic structure of the graded algebra of differentially homogeneous polynomials of fixed finite order. We show that it is a finitely generated algebra, and we exhibit a minimal set of generators. Along the way,…

Algebraic Geometry · Mathematics 2024-10-24 Antoine Etesse

The paper uses the cellular basis of the (semi-simple) degenerate cyclotomic Hecke algebras to investigate these algebras exhaustively. As a consequence, we describe explicitly the "Young's seminormal form" and a orthogonal bases for Specht…

Representation Theory · Mathematics 2011-10-11 Deke Zhao
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