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

Nonlinear Evolution Equations and Quasi-Variational Analysis

Research Project

Project/Area Number 26400162
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Mathematical analysis
Research InstitutionWakayama University (2015-2018)
Nagoya Institute of Technology (2014)

Principal Investigator

Kubo Masahiro  和歌山大学, システム工学部, 教授 (80205129)

Project Period (FY) 2014-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords非線形解析 / 準変分解析 / 非線形発展方程式 / 非線形偏微分方程式 / 変分不等式 / 準変分不等式 / 関数方程式 / 劣微分作用素 / 放物型準変分不等式 / 時間大域強解 / 不動点定理 / 楕円型偏微分方程式 / 楕円型変分不等式 / 変分原理 / 非線形放物型偏微分方程式 / 非線形楕円型偏微分方程式 / 放物型変分不等式 / 凸解析 / 準劣微分作用素
Outline of Final Research Achievements

We proved abstract existence theorems for elliptic variational and quasi-variational inequalities as well as parabolic ones within the framework of Quasi-Variational Analysis that had been proposed by us.
For elliptic problems, we assume convexity for the principal part of the functional instead of strict convexity which had been needed before this research.
As for parabolic problems, we employed the theory and method of time-dependent subdifferential evolution equations in the main step of the proof. Moreover, we recognized the importance of assuming right continuity for the elements of the domain concerning the quasi-variationality of the functional in order to overcome a subtle difficulty arising in prolonging the local solution to a global one.

Academic Significance and Societal Importance of the Research Achievements

非線形発展方程式論は、吉田耕作の線形半群理論、高村幸男の非線形半群理論に淵源を持ち、加藤敏夫など日本人研究者によって創始・発展させられてきた数学解析における重要な分野である。
本研究では、物理や工学上広い応用を持つ変分不等式への豊かな応用可能性を有する時間依存劣微分発展方程式の理論と方法を一歩前進させることにより、放物型準変分不等式の抽象的理論を構築することに成功した。
また、対応する定常問題に関しても、楕円型準変分不等式の抽象的理論を従来より応用可能性を広げる形で再構築した。これにより、従来よりも広いクラスの変分不等式・準変分不等式の研究が可能になり、物理学や工学上の問題への応用可能性が広がった

Report

(6 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (5 results)

All 2018 2017 2016 2015 2014

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (2 results)

  • [Journal Article] Global strong solutions to abstract quasi-variational evolution equations2018

    • Author(s)
      Masahiro Kubo, Noriaki Yamazaki
    • Journal Title

      Journal of Differential Equations

      Volume: 265 Issue: 9 Pages: 4158-4180

    • DOI

      10.1016/j.jde.2018.06.005

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quasi-variational analysis2017

    • Author(s)
      Kubo Masahiro
    • Journal Title

      Sugaku Expositions

      Volume: 30 Issue: 1 Pages: 17-34

    • DOI

      10.1090/suga/416

    • NAID

      130005439497

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Quasi-subdifferential operator approach to elliptic variational and quasi-variational inequalities2016

    • Author(s)
      Kubo, M., Murase, Y.
    • Journal Title

      Mathematical Methods in the Applied Sciences

      Volume: 39 Issue: 18 Pages: 5626-5635

    • DOI

      10.1002/mma.3948

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Presentation] 準劣微分作用素によって特徴付けられる楕円型仮似変分不等式の可解性について2015

    • Author(s)
      村瀬勇介、久保雅弘
    • Organizer
      日本数学会2015年度年会
    • Place of Presentation
      明治大学
    • Year and Date
      2015-03-21 – 2015-03-24
    • Related Report
      2014 Research-status Report
  • [Presentation] A quasi-variational inequality for a biological diffusion model environmental constraint2014

    • Author(s)
      Masahiro Kubo
    • Organizer
      JSMB/SMB 2014 Osaka
    • Place of Presentation
      大阪府立国際会議場
    • Year and Date
      2014-07-28 – 2014-08-01
    • Related Report
      2014 Research-status Report

URL: 

Published: 2014-04-04   Modified: 2020-03-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi