Showing 1 - 20 results of 26 for search '"Schubert varieties"', query time: 0.23s Refine Results
  1. 1

    Singularities of Affine Schubert Varieties by Jochen Kuttler, Venkatramani Lakshmibai

    Published 2009-04-01
    Subjects: “…Schubert varieties…”
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    Which Schubert varieties are local complete intersections? by Henning Úlfarsson, Alexander Woo

    Published 2012-01-01
    Subjects: “…schubert varieties…”
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    Staircase diagrams and the enumeration of smooth Schubert varieties by Edward Richmond, William Slofstra

    Published 2020-04-01
    “…In this extended abstract, we give a complete description and enumeration of smooth and rationally smooth Schubert varieties in finite type. In particular, we show that rationally smooth Schubert varieties are in bijection with a new combinatorial data structure called staircase diagrams.…”
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    Frobenius splitting of Schubert varieties of semi-infinite flag manifolds by Syu Kato

    Published 2021-01-01
    “…We exhibit basic algebro-geometric results on the formal model of semi-infinite flag varieties and its Schubert varieties over an algebraically closed field ${\mathbb K}$ of characteristic $\neq 2$ from scratch. …”
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    Toric matrix Schubert varieties and root polytopes (extended abstract) by Laura Escobar, Karola Mészáros

    Published 2020-04-01
    “…Start with a permutation matrix π and consider all matrices that can be obtained from π by taking downward row operations and rightward column operations; the closure of this set gives the matrix Schubert variety Xπ. We characterize when the ideal defining Xπ is toric (with respect to a 2n − 1-dimensional torus) and study the associated polytope of its projectivization. …”
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    The Prism tableau model for Schubert polynomials by Anna Weigandt, Alexander Yong

    Published 2020-04-01
    “…Our arguments are developed from the Gr¨obner geometry of matrix Schubert varieties.…”
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    Article
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    A noncommutative geometric LR rule by Edward Richmond, Vasu Tewari, Stephanie Van Willigenburg

    Published 2020-04-01
    “…The geometric Littlewood-Richardson (LR) rule is a combinatorial algorithm for computing LR coefficients derived from degenerating the Richardson variety into a union of Schubert varieties in the Grassmannian. Such rules were first given by Vakil and later generalized by Coskun. …”
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    Kazhdan-Lusztig polynomials of boolean elements by Pietro Mongelli

    Published 2013-01-01
    “…As an application of the formulas, we compute the intersection homology Poincaré polynomials of the Schubert varieties of boolean elements.…”
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    Total positivity for the Lagrangian Grassmannian by Rachel Karpman

    Published 2020-04-01
    “…There are a number of interesting combinatorial posets which index positroid varieties,just as Young diagrams index Schubert varieties. In addition, Postnikov’s boundary measurement map gives a family of parametrizations for each positroid variety. …”
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    Article
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    Grassmanniennes affines tordues sur les entiers by João Lourenço

    Published 2023-01-01
    “…We study their affine Grassmannians, proving normality of Schubert varieties and Zhu’s coherence theorem.…”
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    Article