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Symmetry and asymmetry of solutions for the elliptic partial differential equations.

Research Project

Project/Area Number 20K03686
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 InstitutionOsaka Electro-Communication University (2022-2023)
Saga University (2020-2021)

Principal Investigator

Kajikiya Ryuji  大阪電気通信大学, 共通教育機構, 教授 (10183261)

Co-Investigator(Kenkyū-buntansha) 田中 敏  東北大学, 理学研究科, 教授 (90331959)
Project Period (FY) 2020-04-01 – 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 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords対称解 / 非対称解 / 解の分岐 / 変分法 / Moore-Nehari / nodal solution / 常微分方程式 / 境界値問題 / 2回常微分方程式 / 半線形楕円型方程式 / ラグランジェ汎関数 / 楕円型偏微分方程式 / 解の対称性 / 解の非対称性
Outline of Research at the Start

楕円型偏微分方程式の正値解の対称性と非対称性に関する研究を行う. 特に全空間, 外部領域に対して, ディリクレ境界条件の下で群不変性を持つ正値解および群不変性を持たない正値解の存在と非存在についての研究を行う. 非線形項がソボレフの臨界指数を持つ場合や境界条件がノイマン境界条件の場合についても研究を行う. 特に, ノイマン境界条件で群不変性を持つ解を考察すると従来知られていた結果と異なる現象が期待できる. 群不変性を入れた場合, 群作用と境界の平均曲率の最大値の両方の関係によって, 解の最大点の位置が決まるものと推測できる.

Outline of Final Research Achievements

We consider the Moore-Nehari ordinary differential equation under the Dirichlet boundary condition in the interval (-1,1). We prove the existence of a solution which has exactly m zeros in the interval (-1,0) and exactly n zeros in (0,1) for given nonnegative integers m and n. For a non-negative integer n, we call a solution u(x) n-nodal if it has exactly n zeros in (-1,1). We call a solution symmetric if it is even or odd. For each n, the equation has a unique n-nodal symmetric solution, which is a continuous curve. We prove that the curve bifurcates and an asymmetric solution emanates.

Academic Significance and Societal Importance of the Research Achievements

対称な解の存在および非対称な解の存在は, 楕円型偏微分方程式の解空間の構造を理解する上で非常に重要なことである. 零点を持つ対称解や非対称解の研究はあまり行われていない. 本研究では, これらの解の詳細な情報を得ている. 特に, 与えられた非負整数の組(m,n)に対して, 区間(-1,0)にちょうどm個の零点を持ち, 区間(0,1)にちょうどn個の零点を持つ解の存在は, 現在までに知られていなかったものであり, 本研究は独創的な研究である. さらに, 零点を持つ対称解から非対称解が分岐する研究は, 本研究以外には行われていないと思われる.

Report

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

    (30 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (1 results) Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results) Presentation (23 results) (of which Int'l Joint Research: 3 results,  Invited: 12 results)

  • [Int'l Joint Research] Faculty of Basic Sciences/Keimyung University(韓国)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Bifurcation of nodal solutions for the Moore-Nehari differential equation.2023

    • Author(s)
      R. Kajikiya
    • Journal Title

      Nonlinear Differential Equations and Applications

      Volume: 30 Issue: 1

    • DOI

      10.1007/s00030-022-00816-w

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Symmetric and asymmetric nodal solutions for the Moore–Nehari differential equation2022

    • Author(s)
      R. Kajikiya
    • Journal Title

      Journal of the Mathematical Society of Japan

      Volume: 74 Issue: 2 Pages: 655-680

    • DOI

      10.2969/jmsj/86168616

    • ISSN
      0025-5645, 1881-1167, 1881-2333
    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Boundedness of critical points in the symmetric mountain pass lemma.2022

    • Author(s)
      R. Kajikiya
    • Journal Title

      J. Convex Anal.

      Volume: 29 Pages: 443-458

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Bifurcation of symmetric solutions for the sublinear Moore-Nehari differential equation.2022

    • Author(s)
      R. Kajikiya
    • Journal Title

      J. Math. Anal. Appl.

      Volume: 512 Issue: 1 Pages: 1-35

    • DOI

      10.1016/j.jmaa.2022.126142

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Existence of nodal solutions for the sublinear Moore-Nehari differential equation.2021

    • Author(s)
      R. Kajikiya
    • Journal Title

      Discrete and Continuous Dynamical Systems. Series A

      Volume: 41 Issue: 3 Pages: 1483-1506

    • DOI

      10.3934/dcds.2020326

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Existence of positive radial solutions for a semipositone elliptic equation.2020

    • Author(s)
      R. Kajikiya and E. Ko
    • Journal Title

      J. Math. Anal. Appl.

      Volume: 484 Issue: 2 Pages: 1-19

    • DOI

      10.1016/j.jmaa.2019.123735

    • NAID

      40022258055

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Nodal solutions for the Moore-Nehari differential equation.2023

    • Author(s)
      R. Kajikiya
    • Organizer
      The 13th AIMS Conference on Dynamical Systems, Differential Equations and Applications.
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Asymptotic behavior and monotonicity of radial eigenvalues for the p-Laplacian.2023

    • Author(s)
      R. Kajikiya
    • Organizer
      2023 Korea-Japan Workshop on Nonlinear PDEs and Its Applications.
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Boundedness of critical points in the symmetric mountain pass lemma.2023

    • Author(s)
      梶木屋龍治
    • Organizer
      日本数学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Radial eigenvalues for the p-Laplacian, I. Asymptotic behavior.2023

    • Author(s)
      梶木屋龍治
    • Organizer
      日本数学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Radial eigenvalues for the p-Laplacian, II. Monotonicity.2023

    • Author(s)
      梶木屋龍治
    • Organizer
      日本数学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 劣線形Moore-Nehari 方程式の解の分岐2023

    • Author(s)
      梶木屋龍治
    • Organizer
      数理解析研究所, 研究集会「精密解析による非線形問題の新展開」
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 球対称pラプラシアンの固有値の漸近挙動と単調性2023

    • Author(s)
      梶木屋龍治
    • Organizer
      名古屋力学系セミナー
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Bifurcation of nodal solutions for the Moore-Nehari differential equation.2023

    • Author(s)
      R. Kajikiya
    • Organizer
      The invited lecture at Pusan National University,
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Boundedness of critical points in the symmetric mountain pass lemma.2023

    • Author(s)
      R. Kajikiya
    • Organizer
      日本数学会, 中央大学
    • Related Report
      2022 Research-status Report
  • [Presentation] 劣線形Moore-Nehari 方程式の解の分岐2023

    • Author(s)
      R. Kajikiya
    • Organizer
      研究集会「精密解析による非線形問題の新展開」
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 劣線形 Moore-Nehari 方程式の解の分岐.2022

    • Author(s)
      R. Kajikiya
    • Organizer
      日本数学会, 北海道大学
    • Related Report
      2022 Research-status Report
  • [Presentation] Bifurcation of nodal solutions for the Moore-Nehari differential equation2022

    • Author(s)
      R. Kajikiya
    • Organizer
      南大阪応用数学セミナー
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Moore-Nehari 微分方程式の解の分岐2022

    • Author(s)
      R. Kajikiya
    • Organizer
      大阪公立大学における微分方程式セミナー
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Moore-Nehari 方程式の対称解の分岐2022

    • Author(s)
      R. Kajikiya
    • Organizer
      早稲田大学, 応用解析研究会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Moore-Nehari 微分方程式の対称解の分岐2022

    • Author(s)
      R. Kajikiya
    • Organizer
      熊本大学応用解析セミナー
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Symmetric and asymmetric nodal solutions for the Moore-Nehari differential equation.2021

    • Author(s)
      R. Kajikiya
    • Organizer
      Differential Equations Day on ZOOM.
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Bifurcation of nodal solutions for the Moore-Nehari differential equation.2021

    • Author(s)
      梶木屋 龍治
    • Organizer
      日本数学会, 千葉大学 (オンラインでの学会)
    • Related Report
      2021 Research-status Report
  • [Presentation] 劣線形 Moore-Nehari 方程式の nodal solution の存在2021

    • Author(s)
      梶木屋 龍治
    • Organizer
      オンラインによる微分方程式セミナー
    • Related Report
      2021 Research-status Report
  • [Presentation] 劣線形楕円型方程式の無限に多くの解の存在2021

    • Author(s)
      梶木屋 龍治
    • Organizer
      東北大学談話会 (オンライン)
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 劣線形楕円型方程式の無限に多くの小さな解の存在2021

    • Author(s)
      梶木屋 龍治
    • Organizer
      広島大学談話会 (対面)
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 劣線形 Moore-Nehari 方程式の nodal solution の存在2021

    • Author(s)
      梶木屋 龍治
    • Organizer
      日本数学会, 慶應義塾大学 (オンラインでの学会)
    • Related Report
      2020 Research-status Report
  • [Presentation] Moore-Nehari 方程式の対称および非対称なnodal solution の存在2020

    • Author(s)
      梶木屋 龍治
    • Organizer
      日本数学会, 熊本大学 (オンラインでの学会)
    • Related Report
      2020 Research-status Report
  • [Presentation] 劣線形楕円型方程式の無限に多くの解の存在2020

    • Author(s)
      梶木屋 龍治
    • Organizer
      埼玉大学談話会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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