• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Research on the structures of parameter spaces by bifurcation in complex dynamics and its visualization

Research Project

Project/Area Number 18K03367
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 12020:Mathematical analysis-related
Research InstitutionKyoto University

Principal Investigator

Inou Hiroyuki  京都大学, 理学研究科, 准教授 (00362434)

Project Period (FY) 2018-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords複素力学系 / 分岐 / くりこみ / ヴァーチャル・リアリティ / クロスリアリティ / 分岐測度 / 4次元 / 4次元可視化 / バーチャル・リアリティ / 反正則力学系 / バーチャルリアリティ / 分岐現象 / ヴァーチャルリアリティ
Outline of Final Research Achievements

We studied renormalization, which is closely related to various properties of the Mandelbrot set, including self-similarity, and constructed new examples of renormalizable polynomials and rational functions. Using them, we analyzed the complicated phenomena of bifurcation loci in higher-dimensional parameter spaces which do not appear in one dimension.
We also implemented an interactive visualization of point clouds in two complex dimensions (four real dimensions) with virtual reality devices, and by using them, we discovered a "hole" in the support of the bifurcation measure, and numerically verified its existence.

Academic Significance and Societal Importance of the Research Achievements

Mandelbrot集合はその複雑な構造から多くの人を魅了している.この(境界の)一般化である複素力学系の族の分岐軌道は,更に複雑な性質を持つ.Mandelbrot集合は局所連結であると予想されているが,複素2次元(実4次元)以上の分岐軌道は局所連結とは限らない.本研究ではそのような更に複雑な集合を可視化し観察するための手法を構築し,また到達可能性や組み合わせ剛性といった局所連結性と関連した重要な性質に関して,高次元で初めて現れる複雑な現象について新たな知見を得ることに成功した.

Report

(7 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (39 results)

All 2024 2023 2022 2021 2020 2019 2018 Other

All Int'l Joint Research (11 results) Journal Article (6 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 6 results) Presentation (22 results) (of which Int'l Joint Research: 15 results,  Invited: 10 results)

  • [Int'l Joint Research] 上海師範大学(中国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] チリカトリック大学(チリ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] トゥールーズ III - ポール・サバティエ大学(フランス)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] 上海師範大学(中国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] 上海数学中心(中国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Tata Institute of Fundamental Research(インド)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] 上海数学中心(中国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Tata Institute of Fundamental Research(インド)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Pontificia Universidad Catolica de Chile(チリ)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Universite Paul Sabatier(フランス)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Stony Brook University(米国)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Straightening Maps for Polynomials with One Bounded Critical Orbit2023

    • Author(s)
      Inou Hiroyuki、Wang Yimin
    • Journal Title

      The Journal of Geometric Analysis

      Volume: 33 Issue: 10

    • DOI

      10.1007/s12220-023-01369-9

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Discontinuity of Straightening in Anti-holomorphic Dynamics: I2021

    • Author(s)
      Inou Hiroyuki、Mukherjee Sabyasachi
    • Journal Title

      Transactions of the American Mathematical Society

      Volume: 374 Issue: 9 Pages: 6445-6481

    • DOI

      10.1090/tran/8381

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Discontinuity of Straightening in Anti-Holomorphic Dynamics: II2020

    • Author(s)
      Inou Hiroyuki、Mukherjee Sabyasachi
    • Journal Title

      International Mathematics Research Notices

      Volume: - Issue: 9 Pages: 6948-6990

    • DOI

      10.1093/imrn/rnaa365

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Polyvision: 4D Space Manipulation through Multiple Projections2019

    • Author(s)
      Matsumoto Keigo、Ogawa Nami、Inou Hiroyuki、Kaji Shizuo、Ishii Yutaka、Hirose Michitaka
    • Journal Title

      SA '19: SIGGRAPH Asia 2019 Emerging Technologies

      Volume: November Pages: 36-37

    • DOI

      10.1145/3355049.3360518

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] An implosion arising from saddle connection in 2D complex dynamics2019

    • Author(s)
      H. Inou, S. Nakane
    • Journal Title

      Indiana University Mathematics Journal

      Volume: 68 Issue: 1 Pages: 35-61

    • DOI

      10.1512/iumj.2019.68.7577

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] On the support of the bifurcation measure of cubic polynomials2019

    • Author(s)
      Inou Hiroyuki、Mukherjee Sabyasachi
    • Journal Title

      Mathematische Annalen

      Volume: 印刷中 Issue: 1-2 Pages: 2019-2019

    • DOI

      10.1007/s00208-019-01826-3

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Infinite adjacent renormalizations for cubic polynomials and combinatorial rigidity2024

    • Author(s)
      Hiroyuki Inou
    • Organizer
      International Colloquium on randomness, geometry, and dynamics
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Renormalization and combinatorial rigidity for complex dynamics2024

    • Author(s)
      稲生 啓行
    • Organizer
      第19回代数・解析・幾何学セミナー
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A “hole” of the support of the bifurcation measure for the biquadratic family2023

    • Author(s)
      Hiroyuki Inou
    • Organizer
      Around the Mandelbrot set: A conference celebrating the 60th birthday of Mitsuhiro Shishikura
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Accessible hyperbolic components of the tricorn2023

    • Author(s)
      Hiroyuki Inou
    • Organizer
      Workshop on Holomorphic Dynamics - MLC and tools for studying it
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A hole of the support of the bifurcation measure for the biquadratic family2023

    • Author(s)
      Hiroyuki Inou
    • Organizer
      French-Jananese Workshop on Real and Complex Henon map
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Visualization and a "hole" of the bifurcation measure for the biquadratic family2022

    • Author(s)
      稲生 啓行
    • Organizer
      力学系の理論と諸分野への応用
    • Related Report
      2022 Research-status Report
  • [Presentation] Visualization in complex dynamics in dimension two2022

    • Author(s)
      Hiroyuki Inou
    • Organizer
      VRを用いたインタラクティブな高次元認識 2
    • Related Report
      2022 Research-status Report
  • [Presentation] Combinatorial classes of infinitely renormalizable cubic polynomials of adjacent type2022

    • Author(s)
      Hiroyuki Inou
    • Organizer
      Workshop on Holomorphic Dynamics - Parabolic Implosion
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 複素力学系のパラメータ空間の構造について2022

    • Author(s)
      稲生 啓行
    • Organizer
      第65回函数論シンポジウム
    • Related Report
      2022 Research-status Report
  • [Presentation] Tuning and quasiconformal surgery2022

    • Author(s)
      Hiroyuki Inou
    • Organizer
      Complex Dynamics in the Tropics - Celebrating the 60th birthday of Carsten Lunde Petersen
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] A compact family of renormalizable rational maps2021

    • Author(s)
      稲生 啓行
    • Organizer
      RIMS共同研究「複素力学系の諸相」
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 4 次元の回転とVRにおける操作2021

    • Author(s)
      稲生 啓行
    • Organizer
      九州大学 IMI 共同利用・短期共同研究 「VR を用いたインタラクティブな高次元認識」
    • Related Report
      2020 Research-status Report
  • [Presentation] An example of tunable rational map2020

    • Author(s)
      稲生 啓行
    • Organizer
      RIMS共同研究「複素力学系理論の総合的研究」
    • Related Report
      2020 Research-status Report
  • [Presentation] Miziurewicz approximation of maps with parabolic fixed point2020

    • Author(s)
      Hiroyuki Inou
    • Organizer
      Complex Dynamics in the Southern Hemisphere
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] An example of an infinitely renormalizable cubic polynomial and its combinatorial class2019

    • Author(s)
      Hiroyuki Inou
    • Organizer
      Holomorphic dynamics and related fields
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Polyvision: 4D Space Manipulation through Multiple Projections2019

    • Author(s)
      Matsumoto Keigo、Ogawa Nami、Inou Hiroyuki、Kaji Shizuo、Ishii Yutaka、Hirose Michitaka
    • Organizer
      SIGGRAPH ASIA 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] An infinitely renormalizable cubic polynomial and its combinatorial class2019

    • Author(s)
      Hiroyuki Inou
    • Organizer
      Real and Complex Dynamics of Henon's maps
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] An infinitely renormalizable cubic polynomial and its combinatorial class2019

    • Author(s)
      Hiroyuki Inou
    • Organizer
      複素力学系の分岐と安定性の研究
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Topological aspects of the tricorn2019

    • Author(s)
      Hiroyuki Inou
    • Organizer
      Topological methods in dynamics and related topics
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Complex dynamics and visualization2019

    • Author(s)
      Hiroyuki Inou
    • Organizer
      University of Auckland Applied Maths Seminar
    • Related Report
      2018 Research-status Report
  • [Presentation] On accessible hyperbolic components for the tricorn2018

    • Author(s)
      稲生 啓行
    • Organizer
      複素力学系研究とその発展
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Topology of the tricorn2018

    • Author(s)
      Hiroyuki Inou
    • Organizer
      復旦大学 上海数学中心 Dynamical Systems Seminar
    • Related Report
      2018 Research-status Report
    • Invited

URL: 

Published: 2018-04-23   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi