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A study for some rational homotopical conditions on the classification spaces of fibrations

Research Project

Project/Area Number 20K03591
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 11020:Geometry-related
Research InstitutionKochi University

Principal Investigator

山口 俊博  高知大学, 教育研究部自然科学系理工学部門, 教授 (90346700)

Project Period (FY) 2020-04-01 – 2025-03-31
Project Status Granted (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords有理ホモトピー論 / 分類空間 / ストリングトポロジー / coformal性 / DGLモデル / Sullivan model / 有理トーラス階数 / universal / 有理H-構造 / Sullivanモデル / Sullivan モデル / 自己親密数 / Hilali予想 / coformal / H-空間 / elliptic space / 有理ホモトピー / Quillen model
Outline of Research at the Start

ファイブレーションの分類空間のホモトピー的性質はわからないことが多いです。本研究は、1980年頃に登場したサリバンモデルやクイレンモデルを用いてその有理ホモトピー的性質を調べます。また、この空間と関連する、自己ホモトピー同値写像のホモトピー類群の性質を考察したり、ファイブレーションに因んだ有理ホモトピー不変量、例えば有理トーラス階数などの評価研究をします。

Outline of Annual Research Achievements

小田信行氏とホモトピー集合への位相の導入について研究し、それはTopology Proceedings から出版された。西信洋和氏とのファイブレーションの分類空間の有理ホモトピーの研究は Homology, Homotopy and Applicationsで印刷中である。また、栗林勝彦氏、内藤貴仁氏、若月駿氏との共同研究においては、ストリング理論と有理モデルの研究はAlgebraic Geometry and Topologyで印刷中であり、カルタン計算の研究はJournal Pure and Applied Algebraで印刷中である。以上の研究により、研究課題のファイブレーションの有理ホモトピー的制約の研究、とくに free loop 空間のファイブレーションにおいて、具体的な成果を得ることができた。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

スラックにより、栗林勝彦氏、内藤貴仁氏、若月駿氏との4人で毎週セミナーを行った。

Strategy for Future Research Activity

パーシステント理論等へ有理ホモトピー論を応用したいので、研究に有益な研究集会への出張費に充てたい。

Report

(4 results)
  • 2023 Research-status Report
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (13 results)

All 2024 2022 2021 2020

All Journal Article (12 results) (of which Int'l Joint Research: 11 results,  Peer Reviewed: 11 results,  Open Access: 11 results) Presentation (1 results)

  • [Journal Article] A topology on homotopy set induced by pairing2024

    • Author(s)
      Nobuyuki Oda and Toshihiro Yamaguchi
    • Journal Title

      Topology Proceedings

      Volume: 63 Pages: 211-225

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] On the coformality of classifying spaces for fibrewise self-equivalences2024

    • Author(s)
      Hirokazu NIshinobu and Toshihihro Yamaguchi
    • Journal Title

      Homology, Homotopy and Applications

      Volume: 印刷中

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A reduction of the string bracket to the loop product2024

    • Author(s)
      Katsuhiko Kuribayashi, Takahito Naito, Shun Wakatsuki, Toshihiro Yamaguchi
    • Journal Title

      Algebraic and Geometric Topology

      Volume: 印刷中

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Cartan calculi on the free loop spaces2024

    • Author(s)
      Katsuhiko Kuribayashi, Takahito Naito, Shun Wakatsuki, Toshihiro Yamaguchi
    • Journal Title

      Journal of Pure and Applied Algebra

      Volume: 印刷中

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] An example of non-coformal classifying space with rational H(2)-structure2022

    • Author(s)
      Hirokazu NIshinobu and Toshihiro Yamaguchi
    • Journal Title

      MATHEMATICA

      Volume: 64 Issue: 2 Pages: 255-264

    • DOI

      10.24193/mathcluj.2022.2.10

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Rational relative toral rank2022

    • Author(s)
      Toshihiro Yamaguchi
    • Journal Title

      Africa Mathematica

      Volume: 33 Issue: 1 Pages: 1-6

    • DOI

      10.1007/s13370-021-00937-y

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] On ratios of homotopy and homology ranks of fibrations2021

    • Author(s)
      Toshihiro Yamaguchi and Shoji Yokura
    • Journal Title

      Topology Proceedings

      Volume: 58 Pages: 85-92

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Relative self-closeness numbers2021

    • Author(s)
      Toshihiro Yamaguchi
    • Journal Title

      Bull.Korean Math. Soc.

      Volume: 58 Pages: 445-449

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] ホモトピー論における「三密」について2021

    • Author(s)
      山口俊博
    • Journal Title

      高知大学教育学部研究報告

      Volume: 81 Pages: 177-180

    • Related Report
      2020 Research-status Report
    • Open Access
  • [Journal Article] Self-closeness numbers of finite cell complexes2020

    • Author(s)
      Nobuyuki Oda and Toshihiro Yamaguchi
    • Journal Title

      Topology and its Applications

      Volume: 272 Pages: 1-25

    • DOI

      10.1016/j.topol.2020.107062

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] On a DGL-map between derivations of Sullivan minimal models2020

    • Author(s)
      Toshihiro Yamaguchi
    • Journal Title

      Arabian Journal of Math.

      Volume: 9 Issue: 3 Pages: 739-754

    • DOI

      10.1007/s40065-020-00291-0

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Poincare polynomials of a map and a relative Hilali conjecture2020

    • Author(s)
      Toshihiro Yamaguchi and Shoji Yokura
    • Journal Title

      Tbilisi Math. J.

      Volume: 13 Pages: 33-47

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 有理H(2)-構造を持つcoformalでない分類空間の例2022

    • Author(s)
      西信洋和、山口俊博
    • Organizer
      日本数学会
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2024-12-25  

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