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Study of the strucure of solutions to nonlinear elliptic equations with various effects

Research Project

Project/Area Number 19K03590
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 InstitutionKeio University

Principal Investigator

Ikoma Norihisa  慶應義塾大学, 理工学部(矢上), 准教授 (50728342)

Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords非自明解 / Born-Infeld方程式 / 弱解と最小化元 / 光線分 / 分数冪ラプラシアン / 安定解 / 層構造 / Monotonicity Trick / 峠の定理 / Born Infeld 方程式 / L^2 正規化解 / 正値解 / L^2正規化解 / 解の多重存在 / 有界な Palais-Smale 列 / 光線(light segment) / L^2正規化問題 / ポテンシャル / Joseph-Lundren指数 / 台が有界な非自明解 / 漸近挙動 / 光線の非存在 / 非自明解の存在 / 非存在 / 劣線形項 / 最小エネルギー解 / 非線形楕円型方程式 / 解の存在,非存在 / 解の性質
Outline of Research at the Start

本研究課題は非線形楕円型方程式と呼ばれる偏微分方程式に対し,特定の性質を持った解の存在(および非存在)を明らかにすることを目標としている.本課題で扱う方程式は,物理学など数学以外の分野において現れるものや幾何学と関連が深いものである.これらの方程式については自明な解と呼ばれる解以外(それらを非自明解と呼ぶ)については解を具体的に書き下すことはできず,非自明解の存在自体が知られていない.本課題では,非自明解の存在を証明することを目標にしているが,それと同時に見つけた非自明解がどのような性質を持っているかについても明らかにしたい.

Outline of Final Research Achievements

The aim of this research project was to investigate the structure of nontrivial solutions to elliptic equations involving singularities, nonlocalities and so on. During the period, the following results were obtained. For the Born-Infeld equation(this equation has a singularity), the regularity of minimizer as well as the relation between minimizers and weak solutions were studied. For the equation with the fractional Laplacian and the Hardy-Henon type nonlinearity (the equation has a nonlocality), the existence and nonexistence of stables solutions was proved. The layer property of the family of stable solutions were also shown. In addition to these two equations, the existence of nontrivial solutions and their properties were obtained for the equation with sublinear nonlinearities, a class of equations involving the 1 dimensional Pucci operators, the equation with large parameters and the equation with a constraint on the L^2 norm of solutions.

Academic Significance and Societal Importance of the Research Achievements

Born-Infeld方程式については,これまでの先行研究とは異なる着眼点から研究を行い,得られた成果も先行研究とは大きく異なる.特に光線分を持つ弱解の存在を示し,エネルギー汎関数の最小化元だが弱解とはならない例を構成できたことも非常に意義深い.分数冪ラプラシアンを含む方程式では,安定解の族とその層構造の存在を示した.これは先行研究を大きく前進させるものであり,新しい技法を発見した.さらに副産物として得られたJoseph-Lundgren指数の複数存在という結果もこれまで考えられてこなかった状況である.これは更なる研究を呼び起こす可能性のある結果であり,興味深いことを見つけたと言える.

Report

(6 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
  • Research Products

    (34 results)

All 2024 2023 2022 2021 2020 Other

All Int'l Joint Research (11 results) Journal Article (9 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 9 results,  Open Access: 2 results) Presentation (14 results) (of which Int'l Joint Research: 5 results,  Invited: 14 results)

  • [Int'l Joint Research] KAIST(韓国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Sapienza University of Rome/Scuola Normale Superiore di Pisa/University of Turin(イタリア)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] ピサ高等師範学校/トリノ大学/ローマ大学(イタリア)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] KAIST(韓国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] ピサ高等師範学校/トリノ大学(イタリア)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] KAIST(韓国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] 福建師範大学/北京師範大学(中国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] KAIST(韓国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] ピサ高等師範学校/トリノ大学(イタリア)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] スウォンジー大学(英国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] University of Swansea(英国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Existence and Regularity for Prescribed Lorentzian Mean Curvature Hypersurfaces, and the Born-Infeld Model2024

    • Author(s)
      Byeon Jaeyoung、Ikoma Norihisa、Malchiodi Andrea、Mari Luciano
    • Journal Title

      Annals of PDE

      Volume: 10 Issue: 1

    • DOI

      10.1007/s40818-023-00167-4

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The existence and multiplicity of L^2-normalized solutions to nonlinear Schroedinger equations with variable coefficients2024

    • Author(s)
      Ikoma Norihisa、Yamanobe Mizuki
    • Journal Title

      Advanced Nonlinear Studies

      Volume: 24 Issue: 2 Pages: 477-509

    • DOI

      10.1515/ans-2022-0056

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] On weak solutions to a fractional Hardy-Henon equation, Part II: Existence2023

    • Author(s)
      Hasegawa Shoichi、Ikoma Norihisa、Kawakami Tatsuki
    • Journal Title

      Nonlinear Analysis

      Volume: 227 Pages: 113165-113165

    • DOI

      10.1016/j.na.2022.113165

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] The existence and multiplicity of L^2-normalized solutions to nonlinear Schroedinger equations with variable coefficients2023

    • Author(s)
      Ikoma Norihisa、Yamanobe Mizuki
    • Journal Title

      Advanced Nonlinear Studies

      Volume: -

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Nonlinear elliptic equations of sublinearity: qualitative behavior of solutions2022

    • Author(s)
      Ikoma Norihisa、Tanaka Kazunaga、Wang Zhi-Qiang、Zhang Chengxiang
    • Journal Title

      Indiana University Mathematics Journal

      Volume: 71 Issue: 5 Pages: 2001-2043

    • DOI

      10.1512/iumj.2022.71.9168

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Existence and asymptotic behavior of positive solutions for a class of locally superlinear Schr?dinger equation2022

    • Author(s)
      Adachi Shinji, Ikoma Norihisa, Watanabe Tatsuya
    • Journal Title

      manuscripta mathematica

      Volume: - Issue: 3-4 Pages: 933-970

    • DOI

      10.1007/s00229-022-01428-5

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] On weak solutions to a fractional Hardy?H?non equation: Part I: Nonexistence2021

    • Author(s)
      Hasegawa Shoichi、Ikoma Norihisa、Kawakami Tatsuki
    • Journal Title

      Communications on Pure & Applied Analysis

      Volume: 0 Issue: 4 Pages: 1559-1600

    • DOI

      10.3934/cpaa.2021033

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] On the existence of positive solutions to a certain class of semilinear elliptic equations2021

    • Author(s)
      Ikoma Norihisa
    • Journal Title

      SN Partial Differential Equations and Applications

      Volume: 2 Issue: 2

    • DOI

      10.1007/s42985-021-00079-7

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Nonlinear elliptic equations of sublinearity: qualitative behavior of solutions2020

    • Author(s)
      N. Ikoma, K. Tanaka, Z.Q. Wang and C. Zhang
    • Journal Title

      Indiana University Mathematics Journal

      Volume: -

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] The mountain pass theorem for nonsmooth functionals and its application2024

    • Author(s)
      Norihisa Ikoma
    • Organizer
      OIST Workshop Geometric Aspects of Partial Differential Equations
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Existence of Small Positive Solutions to the Nonlinear Schroedinger Equation2023

    • Author(s)
      Norihisa Ikoma
    • Organizer
      Special Session 47 Singular Limits in Elliptic and Parabolic PDEs (The 13th AIMS Conference on Dynamical Systems, Differential Equations And Applications)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Existence and Nonexistence of Stable Solutions to a Fractional Hardy-Henon Equation2023

    • Author(s)
      Norihisa Ikoma
    • Organizer
      Special Session 50 Nonlinear Elliptic PDEs: Analysis and Computations (The 13th AIMS Conference on Dynamical Systems, Differential Equations And Applications)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Born-Infeld 方程式の弱解の存在,非存在およびその性質2023

    • Author(s)
      生駒典久
    • Organizer
      数理学談話会(金沢大学)
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Existence of small positive solutions to the nonlinear Schroedinger equation2023

    • Author(s)
      Norihisa Ikoma
    • Organizer
      Seminar at University of Turin
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Existence of small positive solutions to the nonlinear Schroedinger equation2023

    • Author(s)
      Norihisa Ikoma
    • Organizer
      Seminar at Scuola Normale Superiore di Pisa
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] The existence of normalized solutions for the nonlinear Schroedinger equationswith the L^2-critical growth2023

    • Author(s)
      Norihisa Ikoma
    • Organizer
      RIMS研究集会(公開型)「発展方程式とその周辺 - エネルギー構造と解の定量的解析 -」
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Lagrangian function approach による L^2 正規化解の存在2023

    • Author(s)
      生駒典久
    • Organizer
      HMA セミナー・冬の研究会 2023(広島大学)
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Born-Infeld 方程式の弱解の存在,非存在およびその性質2022

    • Author(s)
      生駒典久
    • Organizer
      談話会(大阪大学)
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] ポテンシャル項付き L^2 正規化解の存在問題2022

    • Author(s)
      生駒典久
    • Organizer
      微分方程式セミナー(大阪大学)
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] The existence and nonexistence of weak solutions to the Born-Infeld equation2022

    • Author(s)
      生駒典久
    • Organizer
      Workshop on Non-compact Variational Problems and Related Topics
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Solvability and Nonsolvability of Born-Infeld equation with general charges2022

    • Author(s)
      生駒典久
    • Organizer
      第39 回九州における偏微分方程式研究会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 分数冪Hardy-Henon方程式に対する安定解の存在・非存在2021

    • Author(s)
      生駒典久
    • Organizer
      応用解析研究会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 劣線形項を持つ非線形楕円型方程式の非負値解の挙動2020

    • Author(s)
      生駒典久
    • Organizer
      九州関数方程式セミナー
    • Related Report
      2020 Research-status Report
    • Invited

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Published: 2019-04-18   Modified: 2025-01-30  

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