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2008 Fiscal Year Final Research Report

A study on conserved cellular automata and their particle systems by ultradiscrete method

Research Project

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Project/Area Number 18560065
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Engineering fundamentals
Research InstitutionRyukoku University

Principal Investigator

MATSUKIDAIRA Junta  Ryukoku University, 理工学部, 教授 (60231594)

Co-Investigator(Kenkyū-buntansha) TAKAHASHI Daisuke  早稲田大学, 理工学術院, 教授 (50188025)
Project Period (FY) 2006 – 2008
Keywords可積分系 / 離散可積分系 / 超離散 / 離散力学系 / 差分方程式 / 交通流 / セルオートマトン / 最適速度モデル
Research Abstract

本研究の主な成果は以下の通りである。(1) 2つの保存量を持つ3階の可積分差分方程式が、2階の可積分差分方程式であるQRT系のペアから構成されることを示した。(2) 2階の可積分差分方程式であるQRT系から、明示的なリャプノフ関数を持つ差分方程式系を構成した。(3) QRT系と周期を持つ変換を組み合わせることによって、高次の保存量を持つ2階の差分方程式を構成する方法を提案した。(4) 交通流モデルとして知られる最適速度モデルの離散化、超離散化に成功した。

  • Research Products

    (12 results)

All 2009 2008 2006

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (7 results)

  • [Journal Article] Constructing two-dimensional integrable mappings that possess invariants of high degree2009

    • Author(s)
      Hironori Tanaka, Junta Matsukidaira, Atsushi Nobe and Teruhisa Tsuda
    • Journal Title

      to appear in RIMS Kokyuroku Bessatsu

    • Peer Reviewed
  • [Journal Article] On a discrete optimal velocity model and its continuous and ultradiscrete relatives2009

    • Author(s)
      Daisuke Takahashi and Junta Matsukidaira
    • Journal Title

      JSIAM Lettes Vol.1

      Pages: 1-4

    • URL

      http://www.jstage.jst.go.jp/article/jsiaml/1/0/1_1/_article

    • Peer Reviewed
  • [Journal Article] 2階可積分差分方程式から生成される高階可積分差分方程式について2006

    • Author(s)
      長井秀友, 高橋大輔, 松木平淳太
    • Journal Title

      日本応用数理学会論文誌 Vol.16, No.3

      Pages: 197-210

    • URL

      http://ci.nii.ac.jp/Detail/detail.do?LOCALID=ART0007920586&lang=ja

    • Peer Reviewed
  • [Journal Article] Discrete mappings with an explicit discrete Lyapunov function related to integrable mappings2006

    • Author(s)
      H. Inoue, D. Takahashi and J. Matsukidaira
    • Journal Title

      Physica D Vol.217

      Pages: 22-30

    • Peer Reviewed
  • [Journal Article] Third-order integrable difference equations generated by a pair of second-order equations2006

    • Author(s)
      J. Matsukidaira and D. Takahashi
    • Journal Title

      J. Phys. A Vol 39

      Pages: 1151-1161

    • Peer Reviewed
  • [Presentation] QRT型差分方程式の拡張について2008

    • Author(s)
      田中宏典, 松木平淳太
    • Organizer
      日本応用数理学会年会
    • Place of Presentation
      東京大学柏キャンパス
    • Year and Date
      2008-09-18
  • [Presentation] QRT系のある拡張について, 可積分数理の拡がり2008

    • Author(s)
      松木平淳太
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2008-08-12
  • [Presentation] A stochastic traffic cellular automaton model with higher velocity2008

    • Author(s)
      Junta Matsukidaira
    • Organizer
      Nonlinear Waves--Theory and Applications
    • Place of Presentation
      清華大学
    • Year and Date
      2008-06-10
  • [Presentation] A stochastic traffic cellular automaton model with higher velocity2008

    • Author(s)
      Junta Matsukidaira
    • Organizer
      The 7th AIMS Conference on Dynamical Systems and Differential Equations
    • Place of Presentation
      University of Texas at Arlington
    • Year and Date
      2008-05-18
  • [Presentation] QRT系から生成される高次元保存量を持つ2階差分方程式2008

    • Author(s)
      田中宏典, 松木平淳太, 野邊厚, 津田照久
    • Organizer
      日本応用数理学会研究部会連合発表会
    • Place of Presentation
      京都大学
    • Year and Date
      2008-03-08
  • [Presentation] Recent Developent of the Study of Discrete and Ultradiscrete Integrable Systems2006

    • Author(s)
      Junta Matsukidaira
    • Organizer
      Mini Minisymposium" Integrable Discrete and Ultra-discrete Systems and Their Applications " in the SIAM Conference on Nonlinear Waves and Coherent Structures
    • Place of Presentation
      University of Washington
    • Year and Date
      2006-09-09
  • [Presentation] Third-order integrable difference equations generated by a pair of second-order equations2006

    • Author(s)
      Junta Matsukidaira and Daisuke Takahashi
    • Organizer
      Symmetries and Integrability of Difference Equations (SIDE) VII
    • Place of Presentation
      The University of Melbourne
    • Year and Date
      2006-07-10

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Published: 2010-06-10   Modified: 2016-04-21  

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