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Holomorphic representations for discrete surfaces, and analysis on their continuous limit

Research Project

Project/Area Number 20K14314
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 11020:Geometry-related
Research InstitutionThe University of Tokushima (2022-2023)
Kyushu University (2020-2021)

Principal Investigator

YASUMOTO Masashi  徳島大学, 大学院社会産業理工学研究部(理工学域), 講師 (70770543)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords離散微分幾何 / 可積分系 / 特異点 / 離散微分幾何学 / 微分幾何学 / 離散幾何学
Outline of Research at the Start

曲面の微分幾何学の研究は,現代微分幾何学の根幹をなす,最も長い歴史を持つ重要な研究分野である.近年,連続的な微分幾何学を離散的な土台のもとで従来の理論を再整備・再構築する研究が活発になされ,種々の研究領域と関わりを持ちながら発展を遂げている.本研究課題では,微分幾何学的性質を持つ種々の離散曲面の構成法を新たに導出するとともに,連続的な曲面の微分幾何学の問題への応用も視野に入れて,適切な分割をとることで離散曲面が同じ微分幾何的性質を持つ曲面に収束するかの詳細な解析を与える.

Outline of Final Research Achievements

It is known that beautiful shapes, such as soap films and soap bubbles, are obtained by certain holomorphic representation formula. In this project, we derived new holomorphic representations representation formulae for discrete surfaces and achieved results in analyzing their continuous limits and asymptotic behaviora. In particular, we were able to uniformly derive holomorphic representation formulae for discrete surfaces based on an integrable systems approach (in collaboration with Mason Pember and Denis Polly), and obtained new insights into the behavior and continuous limit of singularities appearing in discrete zero mean curvature surfaces in three-dimensional Minkowski space.

Academic Significance and Societal Importance of the Research Achievements

コンピュータサイエンスの発展に伴い,従来の微分幾何を,離散的な土台の下で理論を再構築することが強く求められている.特定の曲率条件のもとでの離散曲面・半離散曲面は,様々な数学研究が交差する重要な研究対象であり,従来は3次元ユークリッド空間内の離散化された曲面を中心に研究されてきた.本研究課題では,必ずしも3次元ユークリッド空間とは限らない,より一般の空間内の離散曲面,半離散曲面の数学研究を整備し,種々の離散化された曲面の構成法を新たに導出した.さらに,その無限遠方の振る舞いや特異性を解析する基礎研究の第一歩を新たに発見し,さらに連続極限への収束性についても解析した.

Report

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

    (42 results)

All 2024 2023 2022 2021 2020 Other

All Int'l Joint Research (10 results) Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results) Presentation (18 results) (of which Int'l Joint Research: 10 results,  Invited: 12 results) Funded Workshop (11 results)

  • [Int'l Joint Research] University of Luxembourg(ルクセンブルク)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] TU Wien(オーストリア)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] ウィーン工科大学(オーストリア)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] 高麗大学校(韓国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] ルクセンブルク大学(ルクセンブルク)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] バース大学(英国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Florida State University London(英国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] TU Wien(オーストリア)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] トリノ工科大学(イタリア)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] ウィーン工科大学(オーストリア)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Discrete Weierstrass-Type Representations2022

    • Author(s)
      M. Pember, D. Polly, M. Yasumoto
    • Journal Title

      Discrete & Computational Geometry

      Volume: TBA Issue: 3 Pages: 816-844

    • DOI

      10.1007/s00454-022-00439-z

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Semi-discrete maximal surfaces with singularities in Minkowski space2021

    • Author(s)
      Masashi Yasumoto
    • Journal Title

      Springer Proceedings in Mathematics & Statistics

      Volume: 349 Pages: 263-280

    • DOI

      10.1007/978-3-030-68541-6_16

    • ISBN
      9783030685409, 9783030685416
    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] 離散曲面の微分幾何2021

    • Author(s)
      Wayne Rossman, 安本真士
    • Journal Title

      数学

      Volume: 73 (1) Pages: 1-21

    • NAID

      40022471610

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 曲面の離散微分幾何の拡がり2024

    • Author(s)
      安本真士
    • Organizer
      ワークショップ「離散幾何学~理論から物質を探求する~」
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] On timelike constant mean curvature surfaces in 3-dimensional Lorentz-Minkowski space2023

    • Author(s)
      Masashi Yasumoto
    • Organizer
      Conference on Geometry: Theory and Applications (CGTA 2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Construcion of discrete zero mean curvature surfaces in Euclidean and Lorentz-Minkowski spaces2023

    • Author(s)
      Masashi Yasumoto
    • Organizer
      minisymposium "Geometric Shape Generation II: Design", ICIAM 2023 Tokyo
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Discrete Weierstrass-type representations, and beyond2023

    • Author(s)
      Masashi Yasumoto
    • Organizer
      The 4th Taiwan-Japan Joint Conference on Differential Geometry
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 可積分変換による離散曲面の構成2023

    • Author(s)
      安本真士
    • Organizer
      先端工学研究発表会2023
    • Related Report
      2022 Research-status Report
  • [Presentation] Discrete p-holomorphic functions and discrete timelike minimal surfaces2022

    • Author(s)
      M. Yasumoto
    • Organizer
      Workshop "Discrete Geometric Structures"
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Discrete zero mean curvature surfaces in Lorentz-Minkowski 3-space2022

    • Author(s)
      M. Yasumoto
    • Organizer
      Discussion meeting on zero mean curvature surfaces in the Lorentz-Minkowski space and related areas
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 可積分な曲面の離散化とその構成2022

    • Author(s)
      安本真士
    • Organizer
      令和4年度徳島数学談話会(冬の会)
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Discrete timelike minimal surfaces2022

    • Author(s)
      Masashi Yasumoto
    • Organizer
      International workshop "Discrete Geometric Analysis and its Applications"
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Constructions of discrete surfaces via integrable systems approach: Part I2022

    • Author(s)
      Masashi Yasumoto
    • Organizer
      The 4th International Workshop "Geometry of Submanifolds and Integrable Systems"
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Constructions of discrete surfaces via integrable systems approach: Part II2022

    • Author(s)
      Masashi Yasumoto
    • Organizer
      The 13th MSJ-SI "Differential Geometry and Integrable Systems"
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 可積分変換による離散曲面の構成2021

    • Author(s)
      安本真士
    • Organizer
      RIMS共同研究(公開型)「可積分系数理の諸相」
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 可積分変換による離散極小曲面の構成2021

    • Author(s)
      安本真士
    • Organizer
      日本応用数理学会2021年度年会
    • Related Report
      2021 Research-status Report
  • [Presentation] Construction and deformation of discrete surfaces via integrable transformations (ポスター)2021

    • Author(s)
      Masashi Yasumoto
    • Organizer
      The 21st International Conference on Discrete Geometric Analysis for Materials Design
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Construction of discrete surfaces via integrable transformations2021

    • Author(s)
      Masashi Yasumoto
    • Organizer
      The 6th China-Japan Geometry Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 離散曲面の微分幾何2021

    • Author(s)
      安本真士
    • Organizer
      プレ・マス・フォア・イノベーションカフェ
    • Related Report
      2020 Research-status Report
  • [Presentation] 可積分変換による離散曲面の構成法2021

    • Author(s)
      安本真士
    • Organizer
      ワークショップ「幾何学と様々な自然現象の解析」
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 離散Weierstrass型の表現公式2020

    • Author(s)
      安本真士
    • Organizer
      日本応用数理学会2020年度年会
    • Related Report
      2020 Research-status Report
  • [Funded Workshop] Discussion Meeting on Smooth and Discrete Differential Geometry2024

    • Related Report
      2023 Annual Research Report
  • [Funded Workshop] The 4th International Conference on Surfaces, Analysis, and Numerics in Differential Geometry2024

    • Related Report
      2023 Annual Research Report
  • [Funded Workshop] The 3rd Shot of The 13th MSJ-SI "Differential Geometry and Integrable Systems"2023

    • Related Report
      2022 Research-status Report
  • [Funded Workshop] Mini-Workshop on Integrable Geometry and Related Topics at Tokushima2022

    • Related Report
      2022 Research-status Report
  • [Funded Workshop] Applications of Harmonic Maps and Higgs Bundles to Differential Geometry2022

    • Related Report
      2022 Research-status Report
  • [Funded Workshop] The 2nd Shot of The 13th MSJ-SI "Differential Geometry and Integrable Systems" ~The 5th International Workshop "Geometry of Submanifolds and Integrable Systems"~2022

    • Related Report
      2022 Research-status Report
  • [Funded Workshop] Symmetry and Stability in Differential Geometry of Surfaces2022

    • Related Report
      2021 Research-status Report
  • [Funded Workshop] The 4th International Workshop "Geometry of Submanifolds and Integrable Systems"2022

    • Related Report
      2021 Research-status Report
  • [Funded Workshop] The 13th MSJ-SI "Differential Geometry and Integrable Systems"2022

    • Related Report
      2021 Research-status Report
  • [Funded Workshop] The 1st FukKO Lectures on Geometry on Discrete Constraint Willmore Surfaces2021

    • Related Report
      2021 Research-status Report
  • [Funded Workshop] 可視化の数理と,対称性およびモジュライの深化2021

    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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