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Hirohata Kazuhide  弘畑 和秀

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… Alternative Names

弘畑 和秀  ヒロハタ カズヒデ

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Researcher Number 30321392
Other IDs
Affiliation (Current) 2025: 茨城工業高等専門学校, 国際創造工学科, 教授
Affiliation (based on the past Project Information) *help 2019 – 2023: 茨城工業高等専門学校, 国際創造工学科, 教授
2006: 茨城工業高等専門学校, 電子情報工学科, 助教授
2003 – 2005: 茨城工業高等専門学校, 電子情報工学科, 講師
2001 – 2002: 茨城工業高等専門学校, 電子情報工学科, 助手
Review Section/Research Field
Principal Investigator
Basic Section 12030:Basic mathematics-related / General mathematics (including Probability theory/Statistical mathematics) / General mathematics (including Probability theory/Statistical mathematics)
Keywords
Principal Investigator
閉路 / 頂点 / 長さ / k連結 / 次数 / グラフ / パンサイクリックグラフ / 点素な閉路 / 弦付き閉路 / 弦 … More / グラフ理論 / 離散数学 / 通路 / 辺 / 全閉路的グラフ / 最小次数和 / pancyclic graph / minimum degree sum / vertex-disjoint cycles / chorded cycle / chord / cycle / Graph Theory / Discrete Mathematics / 最大次数 / 3連結 Less
  • Research Projects

    (5 results)
  • Research Products

    (8 results)
  •  グラフの指定要素を含む閉路が存在するための十分条件Principal Investigator

    • Principal Investigator
      弘畑 和秀
    • Project Period (FY)
      2023 – 2025
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 12030:Basic mathematics-related
    • Research Institution
      Ibaraki National College of Technology
  •  Structural analysis of graphs by degree conditions to the existence of cycles including specified elementsPrincipal Investigator

    • Principal Investigator
      Hirohata Kazuhide
    • Project Period (FY)
      2019 – 2022
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 12030:Basic mathematics-related
    • Research Institution
      Ibaraki National College of Technology
  •  グラフにおける長い閉路の存在性についてPrincipal Investigator

    • Principal Investigator
      弘畑 和秀
    • Project Period (FY)
      2005 – 2006
    • Research Category
      Grant-in-Aid for Young Scientists (B)
    • Research Field
      General mathematics (including Probability theory/Statistical mathematics)
    • Research Institution
      Ibaraki National College of Technology
  •  k連結グラフの指定した頂点集合を通る長い通路の存在性とハミルトン閉路に関する研究Principal Investigator

    • Principal Investigator
      弘畑 和秀
    • Project Period (FY)
      2003 – 2004
    • Research Category
      Grant-in-Aid for Young Scientists (B)
    • Research Field
      General mathematics (including Probability theory/Statistical mathematics)
    • Research Institution
      Ibaraki National College of Technology
  •  グラフの長い通路と閉路の存在性についてPrincipal Investigator

    • Principal Investigator
      弘畑 和秀
    • Project Period (FY)
      2001 – 2002
    • Research Category
      Grant-in-Aid for Young Scientists (B)
    • Research Field
      General mathematics (including Probability theory/Statistical mathematics)
    • Research Institution
      Ibaraki National College of Technology

All 2024 2022 2021 2020

All Journal Article Presentation

  • [Journal Article] Chorded pancyclicity with distance two degree condition and doubly chorded pancyclicity2024

    • Author(s)
      Kazuhide Hirohata, Ronald J. Gould, Megan Cream
    • Journal Title

      Australasian Journal of Combinatorics

      Volume: 88(1) Pages: 97-108

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K03207
  • [Journal Article] On degree sum conditions and vertex-disjoint chorded cycles2020

    • Author(s)
      Bradley Elliott, Ronald J. Gould, Kazuhide Hirohata
    • Journal Title

      Graphs and Combinatorics

      Volume: 36(6) Issue: 6 Pages: 1927-1945

    • DOI

      10.1007/s00373-020-02227-z

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03610
  • [Journal Article] On independent triples and vertex-disjoint chorded cycles in graphs2020

    • Author(s)
      Ronald J. Gould, Kazuhide Hirohata, Ariel Keller Rorabaugh
    • Journal Title

      Australasian Journal of Combinatorics

      Volume: 77(3) Pages: 355-372

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03610
  • [Presentation] Degree sum conditions for the existence of vertex-disjoint chorded cycles in a graph2022

    • Author(s)
      Kazuhide Hirohata, Bradley Elliott, Ronald J. Gould
    • Organizer
      2022 日本数学会年会 応用数学分科会
    • Data Source
      KAKENHI-PROJECT-19K03610
  • [Presentation] Vertex-disjoint chorded cycles and degree sum conditions2021

    • Author(s)
      Kazuhide Hirohata, Bradley Elliott, Ronald J. Gould
    • Organizer
      2021 応用数学合同研究集会
    • Data Source
      KAKENHI-PROJECT-19K03610
  • [Presentation] Vertex-disjoint chorded cycles and degree sum conditions2021

    • Author(s)
      Kazuhide Hirohata, Ronald J. Gould, Ariel K. Rorabaugh
    • Organizer
      2021 日本数学会秋季総合分科会
    • Data Source
      KAKENHI-PROJECT-19K03610
  • [Presentation] Vertex-disjoint chorded cycles and degree sum conditions2021

    • Author(s)
      Kazuhide Hirohata, Ronald J. Gould, Ariel K. Rorabaugh
    • Organizer
      Japanese Conference on Combinatorics and its Applications 2021
    • Data Source
      KAKENHI-PROJECT-19K03610
  • [Presentation] Vertex-disjoint chorded cycles and degree sum condition2020

    • Author(s)
      Ronald J. Gould, Kazuhide Hirohata, Ariel Keller Rorabaugh
    • Organizer
      日本数学会 秋季総合分科会
    • Data Source
      KAKENHI-PROJECT-19K03610

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