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HAYASHI Koyo  林 興養

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Hayashi Koyo  林 興養

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Researcher Number 40963559
Affiliation (Current) 2025: 東京大学, 大学院情報理工学系研究科, 助教
Affiliation (based on the past Project Information) *help 2023 – 2024: 東京大学, 大学院情報理工学系研究科, 助教
2022: 中央大学, 理工学部, 助教
Review Section/Research Field
Principal Investigator
Basic Section 60010:Theory of informatics-related / 0201:Algebra, geometry, analysis, applied mathematics,and related fields
Except Principal Investigator
Broad Section J
Keywords
Principal Investigator
細分 / マイナー / アルゴリズム / 彩色 / グラフ / 組合せ最適化 / 細分・マイナー
Except Principal Investigator
組合せ最適化 / グラフ理論 / グラフ構造 … More / アルゴリズム / グラフ / グラフアルゴリズム / 離散数学 Less
  • Research Projects

    (3 results)
  • Research Products

    (7 results)
  • Co-Researchers

    (6 People)
  •  アルゴリズム的なグラフ構造の理論とその応用Principal Investigator

    • Principal Investigator
      林 興養
    • Project Period (FY)
      2024 – 2028
    • Research Category
      Grant-in-Aid for Early-Career Scientists
    • Review Section
      Basic Section 60010:Theory of informatics-related
    • Research Institution
      The University of Tokyo
  •  Developing the frontier where coloring theory and structural theory of graphs intersectPrincipal Investigator

    • Principal Investigator
      Hayashi Koyo
    • Project Period (FY)
      2022 – 2023
    • Research Category
      Grant-in-Aid for Research Activity Start-up
    • Review Section
      0201:Algebra, geometry, analysis, applied mathematics,and related fields
    • Research Institution
      The University of Tokyo
      Chuo University
  •  Graph Algorithms and Optimization: Theory and Scalable Algorithms

    • Principal Investigator
      河原林 健一
    • Project Period (FY)
      2022 – 2026
    • Research Category
      Grant-in-Aid for Scientific Research (S)
    • Review Section
      Broad Section J
    • Research Institution
      National Institute of Informatics

All 2024 2023 2022 2021

All Journal Article Presentation

  • [Journal Article] Finding Hall Blockers by Matrix Scaling2023

    • Author(s)
      Koyo Hayashi, Hiroshi Hirai, Keiya Sakabe
    • Journal Title

      Mathematics of Operations Research

      Volume: - Issue: 4 Pages: 2166-2179

    • DOI

      10.1287/moor.2022.0198

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22K20343
  • [Journal Article] Two Flags in a Semimodular Lattice Generate an Antimatroid2023

    • Author(s)
      Koyo Hayashi, Hiroshi Hirai
    • Journal Title

      Order

      Volume: - Issue: 2 Pages: 463-470

    • DOI

      10.1007/s11083-023-09639-5

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22K20343
  • [Journal Article] Rooted topological minors on four vertices2021

    • Author(s)
      Koyo Hayashi, Ken-ichi Kawarabayashi
    • Journal Title

      Journal of Combinatorial Theory, Series B

      Volume: - Pages: 146-185

    • DOI

      10.1016/j.jctb.2021.05.002

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19J22605, KAKENHI-PROJECT-22H05001
  • [Presentation] 古典アルゴリズムとの比較:数理的な正当性と近似アルゴリズム2024

    • Author(s)
      河原林 健一
    • Organizer
      2024年電気情報通信学会総合大会
    • Invited
    • Data Source
      KAKENHI-PROJECT-22H05001
  • [Presentation] Toward the directed graph minor theory2023

    • Author(s)
      河原林健一
    • Organizer
      TGT35
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-22H05001
  • [Presentation] Computing Canonical Graph Decompositions2023

    • Author(s)
      河原林健一
    • Organizer
      10TH SLOVENIAN CONFERENCE ON GRAPH THEORY
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-22H05001
  • [Presentation] 4頂点完全グラフの根付き細分問題2022

    • Author(s)
      林 興養
    • Organizer
      Japanese Conference on Combinatorics and its Applications 2022
    • Invited
    • Data Source
      KAKENHI-PROJECT-22K20343
  • 1.  河原林 健一 (40361159)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 3 results
  • 2.  垣村 尚徳 (30508180)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 3.  小林 佑輔 (40581591)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 4.  吉田 悠一 (50636967)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 5.  Avis David (90584110)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 6.  黒木 祐子 (50889095)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results

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