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We prove a determinantal formula and Pfaffian formulas that respectively describe the $K$-theoretic degeneracy loci classes for Grassmann bundles and for symplectic Grassmann and odd orthogonal bundles. The former generalizes…

Algebraic Geometry · Mathematics 2018-09-28 Thomas Hudson , Takeshi Ikeda , Tomoo Matsumura , Hiroshi Naruse

The main classical result of Schubert calculus is that multiplication rules for the basis of Schubert cycles inside the cohomology ring of the Grassmannian $G(n,m)$ are the same as multiplication rules for the basis of Schur polynomials in…

Representation Theory · Mathematics 2024-07-24 Antoine Labelle

We find presentations by generators and relations for the equivariant quantum cohomology rings of the maximal isotropic Grassmannians of types B,C and D, and we find polynomial representatives for the Schubert classes in these rings. These…

Combinatorics · Mathematics 2022-04-05 Takeshi Ikeda , Leonardo C. Mihalcea , Hiroshi Naruse

We study the Schubert calculus of the affine Grassmannian Gr of the symplectic group. The integral homology and cohomology rings of Gr are identified with dual Hopf algebras of symmetric functions, defined in terms of Schur's P and…

Combinatorics · Mathematics 2011-02-07 Thomas Lam , Anne Schilling , Mark Shimozono

The complex orthogonal and symplectic groups both act on the complete flag variety with finitely many orbits. We study two families of polynomials introduced by Wyser and Yong representing the $K$-theory classes of the closures of these…

Combinatorics · Mathematics 2020-12-02 Eric Marberg , Brendan Pawlowski

Let X be a symplectic or odd orthogonal Grassmannian which parametrizes isotropic subspaces in a vector space equipped with a nondegenerate (skew) symmetric form. We prove quantum Giambelli formulas which express an arbitrary Schubert class…

Algebraic Geometry · Mathematics 2008-12-05 Anders S. Buch , Andrew Kresch , Harry Tamvakis

Given two polynomials f(x) and g(x), we extend the formula expressing the remainder in terms of the roots of these two polynomials to the case where f(x) is a Laurent polynomial. This allows us to give new expressions of a Schur function,…

Combinatorics · Mathematics 2007-05-23 Susan Y. J. Wu , Arthur L. B. Yang

We establish a Gysin formula for Schubert bundles and a strong version of the duality theorem in Schubert calculus on Grassmann bundles. We then combine them to compute the fundamental classes of Schubert bundles in Grassmann bundles, which…

Algebraic Geometry · Mathematics 2020-09-03 Lionel Darondeau , Piotr Pragacz

We prove the Cauchy type identities for the universal double Schubert polynomials, introduced recently by W. Fulton. As a corollary, the determinantal formulae for some specializations of the universal double Schubert polynomials…

q-alg · Mathematics 2008-02-03 Anatol N. Kirillov

We give an algebra-combinatorial constructions of (noncommutative) generating functions of double Schubert and double $\beta$-Grothendieck polynomials corresponding to the full flag varieties associated to the Lie groups of classical types…

Combinatorics · Mathematics 2015-04-08 A. N. Kirillov

In this note we develop a systematic combinatorial definition for constructed earlier supersymmetric polynomial families. These polynomial families generalize canonical Schur, Jack and Macdonald families so that the new polynomials depend…

High Energy Physics - Theory · Physics 2024-10-25 Dmitry Galakhov , Alexei Morozov , Nikita Tselousov

We introduce two families of symmetric functions generalizing the factorial Schur $P$- and $Q$- functions due to Ivanov. We call them $K$-theoretic analogues of factorial Schur $P$- and $Q$- functions. We prove various combinatorial…

Combinatorics · Mathematics 2013-05-27 Takeshi Ikeda , Hiroshi Naruse

We use Bott-Samelson resolutions of Schubert varieties in Grassmannians along with equiariant localization techniques to show that the factorial Schur functions and the factorial Grothendieck polynomials represent Schubert classes in…

Algebraic Geometry · Mathematics 2021-10-14 David Oetjen

We establish an equivariant quantum Giambelli formula for partial flag varieties. The answer is given in terms of a specialization of universal double Schubert polynomials. Along the way, we give new proofs of the presentation of the…

Algebraic Geometry · Mathematics 2015-06-10 Dave Anderson , Linda Chen

The goal of the paper is two-fold. At first, we attempt to give a survey of some recent applications of symmetric polynomials and divided differences to intersection theory. We discuss: polynomials universally supported on degeneracy loci;…

alg-geom · Mathematics 2008-02-03 Piotr Pragacz

We introduce edge labeled Young tableaux. Our main results provide a corresponding analogue of [Sch\"{u}tzenberger '77]'s theory of jeu de taquin. These are applied to the equivariant Schubert calculus of Grassmannians. Reinterpreting, we…

Combinatorics · Mathematics 2018-08-14 Hugh Thomas , Alexander Yong

Enriched versions of type A Schubert polynomials are constructed with coefficients in a polynomial ring in variables $c_1, c_2, \ldots$. Specializing these variables to $0$ recovers the double Schubert polynomials of Lascoux and…

Combinatorics · Mathematics 2021-02-12 David Anderson , William Fulton

This article presents a formula for products of Schubert classes in the quantum cohomology ring of the Grassmannian. We introduce a generalization of Schur symmetric polynomials for shapes that are naturally embedded in a torus. Then we…

Combinatorics · Mathematics 2007-05-23 Alexander Postnikov

We study multiplication of any Schubert polynomial $\mathfrak{S}_w$ by a Schur polynomial $s_\lambda$ (the Schubert polynomial of a Grassmannian permutation) and the expansion of this product in the ring of Schubert polynomials. We derive…

Combinatorics · Mathematics 2014-01-03 Karola Meszaros , Greta Panova , Alexander Postnikov

We show that the k-double Schur functions defined by the authors, and the quantum double Schubert polynomials studied by Kirillov and Maeno and by Ciocan-Fontanine and Fulton, can be obtained from each other by an explicit rational…

Combinatorics · Mathematics 2011-09-13 Thomas Lam , Mark Shimozono