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Singularity of geometric structures appearing in dynamical systems

Research Project

Project/Area Number 19K14540
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 11020:Geometry-related
Research InstitutionRitsumeikan University

Principal Investigator

Tarama Daisuke  立命館大学, 理工学部, 准教授 (30722780)

Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
KeywordsHamilton力学系 / 測地流 / 可積分性 / Lie群 / 平衡点 / 代数的・複素解析的幾何学 / sub-Riemann幾何学 / 情報幾何学 / sub-Riemann構造 / 統計的変換モデル / sub-Laplace作用素 / Lagrange力学系 / 等質空間 / 熱核 / 可積分系 / Fisher-Rao計量 / 剛体 / 摂動 / 代数的可積分系 / Lagrangeファイブレーション / 力学系 / 幾何構造 / 特異性 / ファイブレーション
Outline of Research at the Start

可積分系(完全積分可能系)をはじめとする力学系には,力学系の幾何学的定式化における微分幾何学的な幾何構造,力学系の挙動の解析に関する微分位相幾何学的な幾何構造やその背後に潜む代数的・複素解析的幾何学における幾何構造といった様々な幾何構造が現れる.この研究では力学系に現れる種々の幾何構造を,特異性に着目して分析することで解明し,力学系の挙動の理解を深める.さらに,摂動系や量子力学系における解析学的問題も解明する.また,力学系のモデルを与えるファイブレーションを構成し,それを基に新たな幾何構造の発見を目指し,力学系の挙動との関係を解明する.

Outline of Final Research Achievements

In the study of dynamical systems modeled by differential equations, there appear geometric structures from the viewpoints of differential geometry, differential topology, and algebraic/complex analytic geometry. The project dealt with the geometric structures arising from Hamiltonian systems, including the integrable systems, with the focus on singularities. Consequently, interesting results are obtained on the stability of equilibria of integrable geodesic flows of Lie groups, integrability of sub-Riemannian geodesic flows on the seven-dimensional sphere, algebro-geometric structures in integrable systems describing the rotational motions of a rigid body, and the description of geodesic flows on Lie groups associated to the statistical transformation models.

Academic Significance and Societal Importance of the Research Achievements

半単純Lie群上の可積分測地流の平衡点の安定性解析に関する結果は,測地流のふるまいの幾何学的理解の深化に大きく貢献したと考えている.また,統計的変換モデルに現れるα測地流の記述は情報幾何学と力学系理論の関係に関する結果として,既存の研究に一石を投じる内容であったと考えている.
社会的には,Lie群上の測地流に関する理解の深化は数値計算アルゴリズムと関わる可能性があるため,重要な意義があると考えられる.また,データサイエンスの重要性が広く認知される中で,力学系理論や幾何学の果たす役割の重要性が再度認識されるためのきっかけを与える役割を果たしているものと考える.

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (60 results)

All 2023 2022 2021 2020 2019 Other

All Int'l Joint Research (19 results) Journal Article (8 results) (of which Int'l Joint Research: 8 results,  Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (27 results) (of which Int'l Joint Research: 20 results,  Invited: 17 results) Funded Workshop (6 results)

  • [Int'l Joint Research] Sorbonne Univesite(フランス)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Leibniz Universitaet Hannover(ドイツ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] EPFL(スイス)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Shanghai Jiao Tong University(中国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Sorbonne Universite(フランス)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Leibniz Universitaet Hannover(ドイツ)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Ecole Polytechnique Federale de Lausanne(スイス)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Shanghai Jiao Tong University(中国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Sorbonne University(フランス)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Leibniz University Hannover(ドイツ)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] EPFL(スイス)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Shanghai Jiao Tong University(中国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Leibniz Universitaet Hannover(ドイツ)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Sorbonne Universite(フランス)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Ecole Polytechnique Federale de Lausanne(スイス)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Shanghai Jiao Tong University(中国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] 上海交通大学(中国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Hannover大学(ドイツ)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Jacques-Louis Lions研究所/Bourgogne数学研究所(フランス)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Rank 5 Trivializable Subriemannian Structure on $$\mathbb {S}^7$$ and Subelliptic Heat Kernel2023

    • Author(s)
      Bauer Wolfram、Laaroussi Abdellah、Tarama Daisuke
    • Journal Title

      Potential Analysis

      Volume: - Issue: 2 Pages: 289-316

    • DOI

      10.1007/s11118-023-10110-8

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Geodesic Flows of $$\alpha $$-connections for Statistical Transformation Models on a Compact Lie Group2023

    • Author(s)
      Tarama Daisuke、Francoise Jean-Pierre
    • Journal Title

      Lecture Notes in Computer Science

      Volume: 14072 Pages: 454-462

    • DOI

      10.1007/978-3-031-38299-4_47

    • ISBN
      9783031382987, 9783031382994
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Dynamical Systems over Lie Groups Associated with Statistical Transformation Models2022

    • Author(s)
      Tarama Daisuke, Francoise Jean-Pierre
    • Journal Title

      Physical Sciences Forum

      Volume: 5(1) Pages: 21-21

    • DOI

      10.3390/psf2022005021

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Information Geometry and Hamiltonian Systems on Lie Groups2021

    • Author(s)
      Daisuke Tarama, Jean-Pierre Francoise
    • Journal Title

      Lecture Notes in Computer Science

      Volume: 12829 Pages: 273-280

    • DOI

      10.1007/978-3-030-80209-7_31

    • ISBN
      9783030802080, 9783030802097
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Geodesic flows on real forms of complex semi-simple Lie groups of rigid body type2020

    • Author(s)
      Ratiu Tudor S.、Tarama Daisuke
    • Journal Title

      Research in the Mathematical Sciences

      Volume: 7 Issue: 4

    • DOI

      10.1007/s40687-020-00227-2

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The Rigid Body Dynamics in an Ideal Fluid: Clebsch Top and Kummer Surfaces2020

    • Author(s)
      J.-P. Francoise, D. Tarama
    • Journal Title

      Integrable Systems and Algebraic Geometry

      Volume: 2 Pages: 288-312

    • DOI

      10.1017/9781108773355.009

    • ISBN
      9781108773355, 9781108715775
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Subriemannian geodesic flow on S^72019

    • Author(s)
      W. Bauer, D, Tarama
    • Journal Title

      数理解析研究所講究録

      Volume: 2137 Pages: 42-59

    • Related Report
      2019 Research-status Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Kummer’s quartic surface associated to the Clebsch top2019

    • Author(s)
      J.-P. Francoise, A. Jacquemard, D. Tarama
    • Journal Title

      数理解析研究所講究録

      Volume: 2137 Pages: 68-80

    • NAID

      120006888151

    • Related Report
      2019 Research-status Report
    • Open Access / Int'l Joint Research
  • [Presentation] Integrability of the subriemannian geodesic flows over the seven-dimensional sphere2023

    • Author(s)
      多羅間 大輔
    • Organizer
      名古屋数理情報科学研究会2023(第1回)
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Geometry around the free rigid body dynamics2023

    • Author(s)
      Daisuke Tarama
    • Organizer
      Seminaire de Systemes Dynamiques, Institut de Mathematiques de Toulouse
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Complete integrability of the subriemannian geodesic flows over the seven-dimensional sphere2023

    • Author(s)
      Daisuke Tarama
    • Organizer
      Finite dimensional integrability in mathematical physics
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Geodesic flows of α-connections for statistical transformation models on a compact Lie group2023

    • Author(s)
      Daisuke Tarama, Jean-Pierre Francoise
    • Organizer
      Geometric Science of Information 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Complex geometry around rigid body dynamics2023

    • Author(s)
      Daisuke Tarama
    • Organizer
      Problems on foliations and dynamics in complex geometry
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Geodesic flows on Lie groups associated to statistical transformation models2023

    • Author(s)
      Daisuke Tarama
    • Organizer
      Microlocal and Global Analysis, Interactions with Geometry
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 情報幾何とシンプレクティック幾何学・接触幾何学 22023

    • Author(s)
      多羅間大輔
    • Organizer
      トポロジープロジェクト研究集会「接触構造、特異点、微分方程式及びその周辺」
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Subriemannian geodesic flows of the 7-dimensional sphere2023

    • Author(s)
      Daisuke Tarama
    • Organizer
      Microlocal and Global Analysis, Interactions with Geometry, Universitaet Potsdam
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 半単純 Lie 群上の可積分測地流について2023

    • Author(s)
      多羅間大輔
    • Organizer
      日本数学会年会,中央大学理工学部
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Dynamical systems over Lie groups associated to statistical transformation models2022

    • Author(s)
      Jean-Pierre Francoise, Daisuke Tarama
    • Organizer
      International Conference on Bayesian and Maximum Entropy methods in Science and Engineering (41st MaxEnt2022 Conference)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Geodesic flows of the Fisher-Rao metrics for the statistical transformation models2022

    • Author(s)
      Daisuke Tarama
    • Organizer
      Oberseminar Analysis und Theoretische Physik, Leibniz Universitaet Hannover
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Geometric aspects of the free rigid body dynamics2022

    • Author(s)
      Daisuke Tarama
    • Organizer
      Floris Takens Seminar, Universiteit Groningen
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Left-invariant geodesic flows over semi-simple Lie groups2022

    • Author(s)
      Daisuke Tarama
    • Organizer
      GFM(Grupo de Fisica Matematica) seminar, Universidade de Lisboa
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Left-invariant geodesic flows on semi-simple Lie groups2022

    • Author(s)
      Daisuke Tarama
    • Organizer
      第15回力学系数理コロキウム(京都大学大学院情報学研究科数理工学専攻矢ヶ崎研究室)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 剛体の力学系と複素代数幾何学2022

    • Author(s)
      多羅間大輔
    • Organizer
      トポロジープロジェクト研究集会「接触構造、特異点、微分方程式及びその周辺」
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Information geometry and dynamical systems over Lie groups2022

    • Author(s)
      Daisuke Tarama
    • Organizer
      Microlocal and Global Analysis, Interactions with Geometry
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Sub-Riemannian geodesic flows on the spheres2022

    • Author(s)
      Daisuke Tarama
    • Organizer
      Himeji Conference on Partial Differential Equations 2022
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Information Geometry and Hamiltonian Systems on Lie Groups2021

    • Author(s)
      Jean-Pierre Francoise, Daisuke Tarama
    • Organizer
      Geometric Science of Information GSI 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 情報幾何学とLie群上の力学系 1・22021

    • Author(s)
      多羅間大輔
    • Organizer
      ミニワークショップ 統計多様体の幾何学とその周辺 (13)
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Integrable geodesic flow of a real semi-simple Lie group of rigid body type2021

    • Author(s)
      Daisuke Tarama
    • Organizer
      Microlocal and Global Analysis, Interactions with Geometry
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Geometry and analysis for the Kirchhoff equations under the Clebsch-Weber condtions2020

    • Author(s)
      D. Tarama
    • Organizer
      Microlocal and Global Analysis, Interactions with Geometry
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Geometry and analysis for the Kirchhoff equations under the Clebsch condition2020

    • Author(s)
      D. Tarama
    • Organizer
      Analysis & Geometry Seminar,Universiteit Antwerpen
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Free rigid body dynamics on SU(p,q) and SO(p,q)2019

    • Author(s)
      D. Tarama
    • Organizer
      FDIS 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Clebsch top and Kummer surface2019

    • Author(s)
      D. Tarama
    • Organizer
      Vietnam-USA Joint Mathematical Meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Mishchenko-Fomenko geodesic flow on a real semi-simple Lie group2019

    • Author(s)
      D. Tarama
    • Organizer
      Seminaire "Systemes Dynamiques, Geometrie Differentielle et Applications"
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 実半単純Lie群上のMishchenko-Fomenko測地流について2019

    • Author(s)
      多羅間 大輔
    • Organizer
      第7回「ハミルトン系とその周辺」研究集会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Clebschのコマの力学系とKummer曲面2019

    • Author(s)
      多羅間 大輔
    • Organizer
      「非可換代数幾何学の大域的問題とその周辺」高知小研究集会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Funded Workshop] Workshop: Global Analysis and Geometry 2023 at Osaka2023

    • Related Report
      2023 Annual Research Report
  • [Funded Workshop] Poisson geometry and related topics 232023

    • Related Report
      2023 Annual Research Report
  • [Funded Workshop] Mini-workshop : Global analysis and Geometry2023

    • Related Report
      2022 Research-status Report
  • [Funded Workshop] Geometric Structures and Differential Equations ―Symmetry, Singularity, and Quantization― (幾何構造と微分方程式 ― 対称性・特異点及び量子化の視点から―)2022

    • Related Report
      2021 Research-status Report
  • [Funded Workshop] Geometry, Mechanics, and their Applications (幾何学と力学とその応用)2019

    • Related Report
      2019 Research-status Report
  • [Funded Workshop] Poisson Geometry and Related Topics (Poisson幾何とその周辺)2019

    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2025-01-30  

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