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On rigidity of foliations on 3-manifolds

Research Project

Project/Area Number 17K14195
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Geometry
Research InstitutionRitsumeikan University

Principal Investigator

Nozawa Hiraku  立命館大学, 理工学部, 准教授 (80706557)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Keywords葉層構造 / 3次元多様体 / 群作用 / 微分位相幾何 / グラフ理論 / リーマン幾何 / 対称空間 / 剛性理論 / 剛性 / トポロジー / グラフ / 力学系 / タイル張り / 極小部分多様体 / コホモロジー / 準結晶 / 3次元双曲多様体 / 低次元トポロジー / モース関数 / 特異点 / 特性類
Outline of Final Research Achievements

A foliation on a space X is a partition of X into spaces of smaller dimension, which are called leaves. The leaves of foliations wrap around other leaves, and admit interesting geometry. It is known that the classification of taut foliations with 2-dimensional leaves on 3-dimensional spaces has some mysterious finite aspects. However few is known about this finiteness phenomenon in concrete situation. In this research project, we study this finiteness phenomenon in simple and important cases. We constructed new examples of such foliations, and gave classification results of foliations in some cases to make progress toward understanding the finiteness.

Academic Significance and Societal Importance of the Research Achievements

トートな葉層構造とは,直観的にはその葉がシャボン玉の膜のように張り詰めているような葉層構造と考えることができる.このような葉層構造は曲面の上の流れの分類の後に自然に研究され,ガバイやクロンハイマー=ムロフカの研究によって非常に強い有限性を持っていることが知られている.その有限性の理解することは3次元空間の幾何,とくにその空間の許容しうる力学系(流れ)の理解を深めることに繋がり,低次元トポロジーにおいて意義があると考えられる.本研究では,顕著な例においてこの有限性の研究を行い,新たな葉層構造の例を構成し,幾何的な葉層構造の分類をある条件下で与えることで,有限性の理解を進めることができた.

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (30 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (11 results) Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (17 results) (of which Int'l Joint Research: 8 results,  Invited: 6 results) Funded Workshop (1 results)

  • [Int'l Joint Research] リヨン第一大学/南部ブルターニュ大学(フランス)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] サンティアゴ・デ・コンポステラ大学(スペイン)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] ダラム大学(英国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] ウィーン大学(オーストリア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] サンティアゴ・デ・コンポステラ大学(スペイン)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] マルブルグ大学フィリップ(ドイツ)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] サンカルロス連邦大学(ブラジル)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] リヨン第一大学(フランス)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] リヨン第一大学(フランス)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] フィリップ大学マールブルク(ドイツ)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] サンカルロス連邦大学(ブラジル)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Dehn twist presentations of hyperelliptic periodic diffeomorphisms on closed surfaces2020

    • Author(s)
      Hiraku Nozawa, Norihisa Takahashi
    • Journal Title

      Kodai Mathematical Journal

      Volume: -

    • NAID

      130007939987

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] 円周上の曲面束の横断的にアファインな葉層構造について2020

    • Author(s)
      野澤 啓, Gilbert Hector
    • Organizer
      金沢大学・学習院大学合同トポロジーセミナー
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 円周上の曲面束の横断的にアファインな葉層構造について2020

    • Author(s)
      野澤 啓, Gilbert Hector
    • Organizer
      接触構造、特異点、微分方程式及びその周辺
    • Related Report
      2019 Annual Research Report
  • [Presentation] On holomorphic Lefschetz number of the Reeb flow of toric Sasakian manifolds2019

    • Author(s)
      Hiraku Nozawa
    • Organizer
      International Symposium on Differential Models in Geometry
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On the volume of toric Sasakian manifolds2019

    • Author(s)
      Hiraku Nozawa
    • Organizer
      Toric Topology 2019 in Okayama
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Morse theory and rigidity for transversely affine foliations2019

    • Author(s)
      Hiraku Nozawa, Gilbert Hector
    • Organizer
      Topological Methods in Dynamics and Related Topics. Shilnikov Workshop
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Rigidity of equicontinuous foliated spaces with locally symmetric leaves2019

    • Author(s)
      Jesus Antonio Alvarez Lopez, Ramon Barral Lijo, 野澤 啓
    • Organizer
      Winter School of tilings and foliated spaces
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] La cohomologia de Haefliger de foliaciones riemannianas completas2019

    • Author(s)
      野澤 啓
    • Organizer
      Seminario de Geometria y Topologia
    • Related Report
      2018 Research-status Report
  • [Presentation] Localization of Chern-Simons type invariants of Sasakian manifolds2018

    • Author(s)
      Oliver Goertsches, 野澤 啓, Dirk Toeben
    • Organizer
      The 3-rd International Workshop "Geometric Structures and Interdisciplinary Applications"
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Localizacion del volumen de variedades sasakianas2018

    • Author(s)
      Oliver Goertsches, 野澤 啓, Dirk Toeben
    • Organizer
      Vidal Abascal Seminar
    • Related Report
      2018 Research-status Report
  • [Presentation] Introduction to taut foliations on 3-manifolds I,II2018

    • Author(s)
      Gilbert Hector, 野澤 啓
    • Organizer
      Advanced Course on Geometry, Topology and Global Analysis of Foliated Spaces
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Taut foliations on surface bundles over the circle2018

    • Author(s)
      Gilbert Hector, 野澤 啓
    • Organizer
      New trends on Foliated and Stratified Spaces: Topology, Geometry and Analysis. Commemorating the 70th birthday of Xose M. Masa
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] On the volume of Sasakian manifolds2018

    • Author(s)
      Oliver Goertsches, 野澤 啓, Dirk Toeben
    • Organizer
      The XII-th International Conference Differential Geometry and Dynamical Systems
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Taut foliations on surface bundles over S^12018

    • Author(s)
      Gilbert Hector, 野澤 啓
    • Organizer
      XXI Brazillian Topology Meeting
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Taut foliations on surface bundles over the circle2018

    • Author(s)
      Gilbert Hector, 野澤 啓
    • Organizer
      Research Seminar of Research group "Differential Geometry and Analysis"
    • Related Report
      2018 Research-status Report
  • [Presentation] 佐々木多様体のチャーン・サイモンズ型不変量の局所化について2018

    • Author(s)
      Oliver Goertsches, 野澤 啓, Dirk Toben
    • Organizer
      第25回沼津改め静岡研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] S^1上の曲面束上の余次元1葉層構造について2018

    • Author(s)
      Gilbert Hector, 野澤 啓
    • Organizer
      第41回トポロジーセミナー
    • Related Report
      2017 Research-status Report
  • [Presentation] 円周上の曲面束のオイラー類が極大な葉層構造について2017

    • Author(s)
      Gilbert Hector, 野澤 啓
    • Organizer
      葉層構造と微分同相群 2017 研究集会
    • Related Report
      2017 Research-status Report
  • [Funded Workshop] International workshop on Geometry of Foliated Spaces2019

    • Related Report
      2019 Annual Research Report

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Published: 2017-04-28   Modified: 2021-02-19  

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