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K-theoretic Schubert Calculus for Grassmannians

Research Project

Project/Area Number 16K17584
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Algebra
Research InstitutionInternational Christian University (2020)
Okayama University of Science (2016-2019)

Principal Investigator

Matsumura Tomoo  国際基督教大学, 教養学部, 准教授 (80755223)

Project Period (FY) 2016-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywordsシューベルト多項式 / シュアー多項式 / グロタンディック多項式 / 旗多様体 / グラスマン多様体 / key多項式 / Lascoux多項式 / flagged Grothendieck多項式 / ラグランジアン・グラスマン多様体 / flagged tableaux / Q関数 / 同変コホモロジー / シューベルト類 / K理論 / Grothendieck多項式 / 行列式公式 / Bott-Samelson類 / algebraic cobordism / 代数的コボルディズム / タブロー公式 / Schur多項式 / シューベルト計算
Outline of Final Research Achievements

The main result obtained from this research was the K-theoretic extensions of the proof of the determinant formula of type A Grassmannian Schubert classes by Kempf-Laksov and Damon and the Pfaffian formula of type C Lagrangian Grassmannian Schubert classes by Kazarian. As a consequence, we understand algebraic and combinatorial aspects of the Grothendieck polynomials. Based on this result, we will work on determining the Schubert coefficients for type C Grassmannians in future work.

Academic Significance and Societal Importance of the Research Achievements

C型のシューベルトカルキュラスに関しては、シューベルト係数を求めるという問題は未解決の部分が多い。そんな中、シューベルト類の良い表示を代数的にも組み合わせ論的にも得られたことは、大きな進展であったと考える。

Report

(6 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (20 results)

All 2021 2020 2019 2018 2017 Other

All Int'l Joint Research (6 results) Journal Article (6 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 6 results) Presentation (7 results) (of which Int'l Joint Research: 4 results,  Invited: 6 results) Remarks (1 results)

  • [Int'l Joint Research] Universite Paris-Saclay, UVSQ, CNRS,/Laboratoire de Mathematiques/de Versailles(フランス)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Fachgruppe Mathematik und Informatik/Bergische Universitat Wuppertal(ドイツ)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Universite de Versailles(フランス)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] UNIVERSITY OF WUPPERTAL(ドイツ)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] UNIVERSITY OF WUPPERTAL(Germany)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] Wuppertal大学(ドイツ)

    • Related Report
      2016 Research-status Report
  • [Journal Article] Double Grothendieck polynomials for Symplectic and Odd Orthogonal Grassmannians2020

    • Author(s)
      Hudson Thomas、Ikeda Takeshi、Matsumura Tomoo、Naruse Hiroshi
    • Journal Title

      Journal of Algebra

      Volume: 546 Pages: 294-314

    • DOI

      10.1016/j.jalgebra.2019.11.002

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Flagged Grothendieck Polynomials2019

    • Author(s)
      Tomoo Matsumura
    • Journal Title

      Journal of Algebraic combinatorics

      Volume: 49 Issue: 3 Pages: 209-228

    • DOI

      10.1007/s10801-018-0841-3

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Vexillary degeneracy loci classes in K-theory and algebraic cobordism2018

    • Author(s)
      Hudson Thomas、Matsumura Tomoo
    • Journal Title

      European Journal of Combinatorics

      Volume: 70 Pages: 190-201

    • DOI

      10.1016/j.ejc.2018.01.001

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Kempf-Laksov Schubert classes for even infinitesimal cohomology theories,2018

    • Author(s)
      Thomas Hudson, Tomoo Matsumura
    • Journal Title

      Schubert Varieties, Equivariant cohomology and Characteristic classes, IMPANGA15

      Volume: 1 Pages: 127-151

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Degeneracy loci classes in K -theory ? determinantal and Pfaffian formula2017

    • Author(s)
      Hudson Thomas、Ikeda Takeshi、Matsumura Tomoo、Naruse Hiroshi
    • Journal Title

      Advances in Mathematics

      Volume: 320 Pages: 115-156

    • DOI

      10.1016/j.aim.2017.08.038

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] An algebraic proof of determinant formulas of Grothendieck polynomials2017

    • Author(s)
      Tomoo Matsumura
    • Journal Title

      Proc. Japan Acad. Ser. A Math. Sci.

      Volume: 93 Pages: 82-85

    • NAID

      40021371450

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] Stability of Schubert varieties and Bott-Samelson resolutions2021

    • Author(s)
      Matsumura, Tomoo
    • Organizer
      Toric Topology 2021 in Osaka
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Tomoo Matsumura2019

    • Author(s)
      A tableau formula of vexillary Schubert polynomials in type C
    • Organizer
      The 46th Symposium on Transformation Groups
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Degeneracy loci and Hessenberg varieties2018

    • Author(s)
      Tomoo Matsumura
    • Organizer
      Hessenberg varieties 2018 in Osaka
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] A tableau formula of the double Grothendieck polynomials associated to 321 avoiding permutations2018

    • Author(s)
      Tomoo Matsumura
    • Organizer
      2018年度秋季総合分科会(於:岡山大学)
    • Related Report
      2018 Research-status Report
  • [Presentation] 旗多様体の K 理論における 321-avoiding 置換のシューベルト類の公式について2018

    • Author(s)
      Tomoo Matsumura
    • Organizer
      RIMS 研究 集会「変換群論における幾何・代数・組み合わせ論」
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] 旗多様体のK理論における321-avoiding置換のシューベルト類の公式について2018

    • Author(s)
      Tomoo Matsumura
    • Organizer
      AlgebraicLie Theory and Representation Theory 2018
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Determinant formulas in Schubert calculus2017

    • Author(s)
      Tomoo Matsumura
    • Organizer
      International Festival in Schubert Calculus
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Remarks] javascript:onSave()

    • Related Report
      2019 Research-status Report

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Published: 2016-04-21   Modified: 2022-01-27  

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