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Stability analysis of submanifold with symmetry

Research Project

Project/Area Number 18K13420
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 11020:Geometry-related
Research InstitutionTokyo University of Science (2021-2022)
Tokyo Denki University (2018-2020)

Principal Investigator

Kajigaya Toru  東京理科大学, 理学部第一部数学科, 助教 (20749361)

Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsハミルトン安定性 / ラグランジュ部分多様体 / エルミート対称空間 / 離散調和写像 / 重み付き有限グラフ / 双曲曲面 / ケーラーC空間 / コンパクト対称空間 / 安定性 / ラグランジュ平均曲率流 / ラグランジュself-shrinker / ハミルトンF-安定性 / Kahler C-space / コンパクトリーマン対称空間 / 極作用 / 双対性 / コンパクト型エルミート対称空間 / 全測地的複素部分多様体 / 実形 / 非コンパクト型エルミート対称空間 / 同変埋め込み / 全測地的部分多様体 / 複素双曲空間 / 双曲閉曲面 / 極小部分多様体 / 等質部分多様体 / ケーラー多様体
Outline of Final Research Achievements

We studied the stability of submanifolds with symmetry, which appear as critical points of volume or energy functionals. These critical points are central objects in the differential geometry of submanifolds. The research resulted in various achievements, such as the implementation of new computational methods, generalization of key facts used in the methods, and extensions to discrete objects.

Academic Significance and Societal Importance of the Research Achievements

本研究課題の1つの研究対象であるラグランジュ部分多様体は、近年、活発な研究が続けられている重要な部分多様体のクラスである。本研究では、その安定性解析を目標として、極小部分多様体や調和写像論の中で発展した従来のアイディアを、対称空間論やトーリック幾何などの幾何学的な発想に基づきながら深化させ、新しい計算手法の実装や離散的対象への拡張など、様々な方向に研究を発展させた。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (44 results)

All 2023 2022 2021 2020 2019 2018

All Journal Article (6 results) (of which Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (37 results) (of which Int'l Joint Research: 13 results,  Invited: 27 results) Funded Workshop (1 results)

  • [Journal Article] グラフ上の変分問題-曲面上のグラフの標準実現-2023

    • Author(s)
      梶ヶ谷徹
    • Journal Title

      数理科学

      Volume: 2月号 Pages: 40-47

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Equivariant realizations of Hermitian symmetric space of noncompact type2022

    • Author(s)
      Takahiro Hashinaga, Toru Kajigaya
    • Journal Title

      Mathematische Zeitschrift

      Volume: 300 Issue: 3 Pages: 2363-2411

    • DOI

      10.1007/s00209-021-02872-x

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Uniformizing surfaces via discrete harmonic maps2021

    • Author(s)
      Kajigaya Toru、Tanaka Ryokichi
    • Journal Title

      Annales Henri Lebesgue

      Volume: 4 Pages: 1767-1807

    • DOI

      10.5802/ahl.116

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A convergence of generalized Lagrangian mean curvature flow in Kahler manifold with positive weighted Ricci form2020

    • Author(s)
      Kajigaya Toru、Kunikawa Keita
    • Journal Title

      Advanced Studies in Pure Mathematics

      Volume: 85 Pages: 205-214

    • DOI

      10.2969/aspm/08510205

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] On Hamiltonian stable Lagrangian tori in complex hyperbolic spaces2020

    • Author(s)
      Toru Kajigaya
    • Journal Title

      Journal of the Mathematical Society of Japan

      Volume: 72 Issue: 2 Pages: 435-463

    • DOI

      10.2969/jmsj/81158115

    • NAID

      130007834731

    • ISSN
      0025-5645, 1881-1167, 1881-2333
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Some homogeneous Lagrangian submanifolds in complex hyperbolic spaces2019

    • Author(s)
      Toru Kajigaya
    • Journal Title

      Proceedings of the 22nd International Workshop on Differential Geometry of Submanifolds in Symmetric Spaces & the 17th RIRCM-OCAMI Joint Differential Geometry Workshop

      Volume: 1 Pages: 183-193

    • Related Report
      2019 Research-status Report
  • [Presentation] 離散調和写像によるグラフの最適な埋め込み2022

    • Author(s)
      梶ヶ谷徹
    • Organizer
      九大幾何セミナー.
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 離散調和写像によるグラフの最適な埋め込み2022

    • Author(s)
      梶ヶ谷徹
    • Organizer
      第6回幾何学的群論ワークショップ
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Hamiltonian stable Lagrangian tori in complex hyperbolic spaces2022

    • Author(s)
      Toru Kajigaya
    • Organizer
      2nd GAPPF, Surfaces with Constant Mean Curvature
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] The energy minimizing discrete harmonic maps and its application to closed surfaces2022

    • Author(s)
      Toru Kajigaya
    • Organizer
      Discrete Geometric Analysis and its Applications
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 非コンパクト型エルミート対称空間の同変実現2022

    • Author(s)
      梶ヶ谷徹
    • Organizer
      部分多様体幾何とリー群作用2021
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 非コンパクト型エルミート対称空間の同変実現2022

    • Author(s)
      梶ヶ谷徹
    • Organizer
      若手による幾何学研究報告会
    • Related Report
      2021 Research-status Report
  • [Presentation] Uniformizing surfaces via discrete harmonic maps2022

    • Author(s)
      Toru Kajigaya
    • Organizer
      The 13th MSJ-SI 2020, Differential Geometry and Integrable Systems - Mathematics of Symmetry, Stability and Moduli -
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Equivariant realizations of Hermitian symmetric space of noncompact type2021

    • Author(s)
      梶ヶ谷徹
    • Organizer
      早稲田大学幾何学セミナー
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 非コンパクト型エルミート対称空間の同変実現2021

    • Author(s)
      梶ヶ谷徹
    • Organizer
      神楽坂微分幾何セミナー
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] An optimal hyperbolic embedding for graph embedding2021

    • Author(s)
      梶ヶ谷徹
    • Organizer
      材料科学における幾何と代数II
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 非コンパクト型エルミート対称空間の同変実現2021

    • Author(s)
      梶ヶ谷徹
    • Organizer
      日本数学会2021年度会
    • Related Report
      2020 Research-status Report
  • [Presentation] ラグランジュ部分多様体と離散調和写像の微分幾何2021

    • Author(s)
      梶ヶ谷徹
    • Organizer
      大阪市立大学数学研究会特別賞受賞講演
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Uniformizing surfaces via discrete harmonic maps2021

    • Author(s)
      Toru Kajigaya
    • Organizer
      Geometric analysis online seminar
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Equivariant realizations of Hermitian symmetric space of noncompact type2021

    • Author(s)
      Toru Kajigaya
    • Organizer
      International Workshop on Geometric Evolution Equations and Related Fields
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 非コンパクト型エルミート対称空間の同変実現2020

    • Author(s)
      梶ヶ谷徹
    • Organizer
      筑波大学幾何セミナー
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Uniformizing surfaces via discrete harmonic maps2020

    • Author(s)
      Toru Kajigaya
    • Organizer
      The 18th OCAMI-RIRCM Joint Differential Geometry Workshop on Differential Geometry of Submanifolds in Symmetric Spaces and Related Problems
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Uniformizing surfaces via discrete harmonic maps2019

    • Author(s)
      Toru Kajigaya
    • Organizer
      Mini-Workshop on Geometry of Surfaces
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 離散調和写像による曲面の一意化2019

    • Author(s)
      梶ヶ谷徹
    • Organizer
      筑波大学幾何セミナー
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 離散調和写像による曲面の一意化2019

    • Author(s)
      梶ヶ谷徹
    • Organizer
      北九州幾何学研究集会2019
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 重み付きハミルトン安定性と変形ラグランジュ平均曲率流2019

    • Author(s)
      梶ヶ谷徹
    • Organizer
      二国間セミナー準備ワークショップ
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Uniformizing surfaces via discrete harmonic maps2019

    • Author(s)
      Toru Kajigaya
    • Organizer
      Geometry and Probability 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 離散調和写像による曲面の一意化2019

    • Author(s)
      梶ヶ谷徹
    • Organizer
      部分多様体論・湯沢2019
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 離散調和写像による曲面の一意化2019

    • Author(s)
      梶ヶ谷徹
    • Organizer
      離散幾何解析とその周辺
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 離散調和写像による曲面の一意化2019

    • Author(s)
      梶ヶ谷徹
    • Organizer
      部分多様体幾何とリー群作用2019
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Reductions of minimal Lagrangian submanifolds with symmetries2019

    • Author(s)
      Toru Kajigaya
    • Organizer
      Workshop on the isoparametric theory
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] An optimal hyperbolic metric for graph embedding2019

    • Author(s)
      Toru Kajigaya
    • Organizer
      Discrete and Computational Geometry and its Applications
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] On Hamiltonian stable Lagrangian tori in complex hyperbolic spaces2019

    • Author(s)
      Toru Kajigaya
    • Organizer
      The 22nd International Workshop on Differential Geometry of Submanifolds in Symmetric Spaces
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Some homogeneous Lagrangian submanifolds in complex hyperbolic spaces2019

    • Author(s)
      Toru Kajigaya
    • Organizer
      Symmetry and shape
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Uniformizing surfaces via discrete harmonic maps,2019

    • Author(s)
      Toru Kajigaya
    • Organizer
      The second Taiwan-Japan Joint Conference on Differential Geometry
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 重み付きハミルトン安定性と変形ラグランジュ平均曲率流2019

    • Author(s)
      梶ヶ谷徹
    • Organizer
      首都大幾何セミナー
    • Related Report
      2018 Research-status Report
  • [Presentation] 複素双曲空間内のハミルトン安定ラグランジュトーラスについて2019

    • Author(s)
      梶ヶ谷徹
    • Organizer
      日本数学会2019年度会
    • Related Report
      2018 Research-status Report
  • [Presentation] An isoparametric function for homogeneous hypersurface in Kahler-Einstein manifold2018

    • Author(s)
      梶ヶ谷徹
    • Organizer
      Hiroshima Differential Geometry Day 2018
    • Related Report
      2018 Research-status Report
  • [Presentation] Hamiltonian stability for weighted measure and generalized Lagrangian mean curvature flow2018

    • Author(s)
      Toru Kajigaya
    • Organizer
      The 11th Mathematical Society of Japan (MSJ) Seasonal Institute (SI) The Role of Metrics in the Theory of Partial Differential Equations
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 対称性を持つ極小ラグランジュ部分多様体の簡約2018

    • Author(s)
      梶ヶ谷徹
    • Organizer
      第65回幾何学シンポジウム
    • Related Report
      2018 Research-status Report
  • [Presentation] 複素双曲空間内のハミルトン安定ラグランジュトーラスについて2018

    • Author(s)
      梶ヶ谷徹
    • Organizer
      部分多様体幾何とリー群作用2018
    • Related Report
      2018 Research-status Report
  • [Presentation] Hamiltonian minimality of normal bundles over the isoparametric submanifolds2018

    • Author(s)
      Toru Kajigaya
    • Organizer
      Ewha Womans University, Geometry Seminar
    • Related Report
      2018 Research-status Report
  • [Presentation] 重み付きハミルトン安定性と変形ラグランジュ平均曲率流2018

    • Author(s)
      梶ヶ谷徹
    • Organizer
      福岡大学幾何セミナー
    • Related Report
      2018 Research-status Report
  • [Funded Workshop] The 5th International Workshop Geometry of Submanifolds and Integrable Systems2022

    • Related Report
      2022 Annual Research Report

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Published: 2018-04-23   Modified: 2024-01-30  

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