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Koga Isami  古賀 勇

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古賀 勇  コガ イサミ

KOGA Isami  古賀 勇

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Researcher Number 60782232
Other IDs
Affiliation (Current) 2025: 九州国際大学, 現代ビジネス学部, 准教授
Affiliation (based on the past Project Information) *help 2022 – 2023: 広島大学, 先進理工系科学研究科(理), 研究員
2018 – 2021: 明治大学, 理工学部, 助教
2016: 九州大学, 大学院・数理学府, 博士研究員
Review Section/Research Field
Principal Investigator
Basic Section 11020:Geometry-related
Except Principal Investigator
Geometry
Keywords
Principal Investigator
グラスマン多様体 / 等質ベクトル束 / 正則等長写像 / 調和解析 / 正則ベクトル束 / 部分多様体 / 正則写像 / ベクトル束 / 表現論 / 同変正則写像 … More / 同変調和写像 / 3次元球面 / 四元数射影空間 / 複素グラスマン多様体 / 同変写像 / モジュライ / ゲージ理論 / 調和写像 … More
Except Principal Investigator
表現論 / モジュライ空間 / 正則写像 / 調和写像 / ゲージ理論 / ベクトル束 Less
  • Research Projects

    (2 results)
  • Research Products

    (16 results)
  • Co-Researchers

    (3 People)
  •  リーマン球面からグラスマン多様体への正則等長写像の研究Principal Investigator

    • Principal Investigator
      古賀 勇
    • Project Period (FY)
      2018 – 2024
    • Research Category
      Grant-in-Aid for Early-Career Scientists
    • Review Section
      Basic Section 11020:Geometry-related
    • Research Institution
      Hiroshima University
      Meiji University
  •  ADHM-construction of vector bundles and harmonic maps

    • Principal Investigator
      NAGATOMO yasuyuki
    • Project Period (FY)
      2014 – 2016
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Meiji University

All 2024 2023 2022 2021 2019 2017

All Journal Article Presentation

  • [Journal Article] Equivariant holomorphic embeddings from the complex projective line into complex Grassmannian of 2-planes2022

    • Author(s)
      Isami Koga, Yasuyuki Nagatomo
    • Journal Title

      Osaka Journal of Mathematics

      Volume: 59 Pages: 495-514

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-18K13411
  • [Presentation] 3次元球面から複素射影空間への全実調和写像の分類2024

    • Author(s)
      古賀勇,長友康行
    • Organizer
      日本数学会2024年度年会
    • Data Source
      KAKENHI-PROJECT-18K13411
  • [Presentation] 複素射影空間から四元数射影空間への同変調和写像2023

    • Author(s)
      古賀勇,長友康行
    • Organizer
      日本数学会2023年度秋季総合分科会
    • Data Source
      KAKENHI-PROJECT-18K13411
  • [Presentation] 複素グラスマン多様体への同変調和写像について2022

    • Author(s)
      古賀勇
    • Organizer
      測地線及び関連する諸問題
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K13411
  • [Presentation] Equivariant harmonic immersions of the complex projective line into the complex Grassmannians of two-planes2022

    • Author(s)
      Isami Koga
    • Organizer
      Differential Geometry Workshop2022
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13411
  • [Presentation] 複素射影直線から複素グラスマン多様体への同変調和写像の分類2022

    • Author(s)
      古賀勇,長友康行
    • Organizer
      日本数学会2022年度会
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K13411
  • [Presentation] Equivariant harmonic immersions of the complex projective line into the comlex Grassmannian of two-planes2022

    • Author(s)
      Isami Koga
    • Organizer
      Differential Geometry and Integrable Systems
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13411
  • [Presentation] Equivariant harmonic immersions of the complex projective line into the complex Grassmannians of two-planes2022

    • Author(s)
      Isami Koga
    • Organizer
      Applications of Harmonic Maps and Higgs bundles
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13411
  • [Presentation] 複素グラスマン多様体への同変調和写像について2021

    • Author(s)
      古賀勇
    • Organizer
      東北大学幾何学セミナー
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K13411
  • [Presentation] ベクトル束と誘導写像2019

    • Author(s)
      古賀勇
    • Organizer
      測地線及び関連する諸問題
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K13411
  • [Presentation] Equivariant minimal isometric immersions from the complex projective line into the complex Grassmannian manifolds of two-planes2019

    • Author(s)
      Isami Koga
    • Organizer
      The 2nd International Conference "Geometry of Submanifolds and Integrable Systems"
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13411
  • [Presentation] 複素射影空間から複素グラスマン多様体への同変正則写像の構成2019

    • Author(s)
      古賀勇
    • Organizer
      日本数学会2019年度会
    • Data Source
      KAKENHI-PROJECT-18K13411
  • [Presentation] 複素射影空間上のベクトル束と誘導者像について2019

    • Author(s)
      古賀勇
    • Organizer
      第66回幾何学シンポジウム
    • Data Source
      KAKENHI-PROJECT-18K13411
  • [Presentation] 複素射影直線から複素グラスマン多様体への同変調和写像の構成と分類2019

    • Author(s)
      古賀勇
    • Organizer
      日本数学会2019年度会
    • Data Source
      KAKENHI-PROJECT-18K13411
  • [Presentation] 複素射影空間から複素グラスマン多様体への同変正則写像の構成2019

    • Author(s)
      古賀勇
    • Organizer
      測地線及び関連する諸問題
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K13411
  • [Presentation] 複素射影直線から階数2の複素グラスマン多様体への同変正則埋め込みの分類2017

    • Author(s)
      古賀勇、長友康行
    • Organizer
      日本数学会
    • Place of Presentation
      首都大学東京
    • Year and Date
      2017-03-24
    • Data Source
      KAKENHI-PROJECT-26400074
  • 1.  NAGATOMO yasuyuki (10266075)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 1 results
  • 2.  TAKAHASHI masaro (70311107)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 3.  Oscar Macia
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results

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