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Analysis of automorphisms on rational surfaces based on entorpy

Research Project

Project/Area Number 16K17617
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Basic analysis
Research InstitutionOkayama University (2018-2019)
Saga University (2016-2017)

Principal Investigator

Uehara Takato  岡山大学, 自然科学研究科, 准教授 (40613261)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Discontinued (Fiscal Year 2019)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords有理曲面 / K3曲面 / 自己同型写像 / エントロピー / K3曲面 / 正則菅状近傍 / 力学系 / 変形理論 / 複素多様体 / 複素力学系
Outline of Final Research Achievements

We construct a family of K3 surfaces in terms of rational surfaces. More precisely, by using two rational surfaces obtained from the blowups of nine points on elliptic curves on projective spaces, we show that a family of K3 surfaces is given by patching two surfaces that are the complements of appropriate tubular neighborhoods of elliptic curves in the rational surfaces. The family contains non-projective K3 surfaces, which enables us to establish the basis for the study of dynamical systems on K3 surfaces.

Academic Significance and Societal Importance of the Research Achievements

射影的でないK3曲面についてはその具体的な記述が困難であるため, その上の双正則自己同型写像による複素力学系の解析は到底不可能であると考えられていた. しかしながら, 本構成方法によるK3曲面は具体的な記述が可能な有理曲面の貼り合わせにより構成しているため, 本研究の目的である双正則自己同型写像による複素力学系の解析が可能であると期待しており, 本研究による構成方法がK3曲面に対して当初予定していなかった新しい見地を与える結果であると考えている.

Report

(4 results)
  • 2019 Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (17 results)

All 2019 2018 2017 2016

All Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 2 results,  Acknowledgement Compliant: 1 results) Presentation (15 results) (of which Int'l Joint Research: 7 results,  Invited: 15 results)

  • [Journal Article] On a question of Gromov about the Wirtinger inequalities2017

    • Author(s)
      Kondo Takefumi、Toyoda Tetsu、Uehara Takato
    • Journal Title

      Geometriae Dedicata

      Volume: 印刷中 Issue: 1 Pages: 203-214

    • DOI

      10.1007/s10711-017-0284-3

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Rational Surface Automorphisms Preserving Cuspidal Anticanonical Curves2016

    • Author(s)
      T. Uehara
    • Journal Title

      Math. Ann.

      Volume: 365

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] Dynamical systems on complex surfaces2019

    • Author(s)
      T. Uehara
    • Organizer
      Workshop on Complex Analytic and Algebraic Methods in Dynamics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 複素曲面上の力学系2019

    • Author(s)
      T. Uehara
    • Organizer
      日本数学会2019年度会特別講演
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] A construction of non-projective K3 surfaces from rational surfaces2018

    • Author(s)
      T. Uehara
    • Organizer
      Complex geometry and complex dynamics in higher dimensions
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 有理曲面を用いた超越的K3曲面の構成について2018

    • Author(s)
      T. Uehara
    • Organizer
      複素領域における微分方程式とその周辺
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] K3曲面の構成と力学系への応用2018

    • Author(s)
      T. Uehara
    • Organizer
      可積分系理論から見える数理構造とその応用
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Wirtinger不等式に関するGromovの問題について2018

    • Author(s)
      Takato Uehara
    • Organizer
      測地線及び関連する諸問題
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] On a construction of non-projective K3 surfaces2018

    • Author(s)
      Takato Uehara
    • Organizer
      Positivity Concepts on Holomorphic Line Bundles and Theories on Canonical Kahler Metrics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] A construction of transcendental K3 surfaces2018

    • Author(s)
      Takato Uehara
    • Organizer
      The 13th Kagoshima Algebra-Analysis-Geometry Seminar
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 複素K3曲面の構成について2017

    • Author(s)
      Takato Uehara
    • Organizer
      第52回函数論サマーセミナー
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Arnol'dの定理を用いた複素K3曲面の構成2017

    • Author(s)
      Takato Uehara
    • Organizer
      第60回函数論シンポジウム
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] On a construction of transcendental K3 surfaces: application of Arnol’d’s theorem2017

    • Author(s)
      Takato Uehara
    • Organizer
      RIMS Workshop on Complex Dynamics 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 複素曲面のダイナミカルスペクトラム2017

    • Author(s)
      Takato Uehara
    • Organizer
      葉層構造の幾何学とその応用
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] On automorphisms preserving meromorphic two forms2017

    • Author(s)
      T. Uehara
    • Organizer
      Dynamics and Analysis in Several Complex Variables
    • Place of Presentation
      京都大学理学研究科, 京都
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Rigidity of automorphisms on rational surfaces2016

    • Author(s)
      T. Uehara
    • Organizer
      Complex dynamical systems and related topics
    • Place of Presentation
      京都大学数理解析研究所, 京都
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] On automorphisms of rational surfaces with positive entropy2016

    • Author(s)
      T. Uehara
    • Organizer
      多変数関数論冬セミナー
    • Place of Presentation
      福岡工業大学, 福岡
    • Related Report
      2016 Research-status Report
    • Invited

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Published: 2016-04-21   Modified: 2021-02-19  

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