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放物型方程式論の深化と放物型性の起源の探索

Research Project

Project/Area Number 18K03382
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 InstitutionWaseda University

Principal Investigator

大谷 光春  早稲田大学, 理工学術院, 名誉教授 (30119656)

Co-Investigator(Kenkyū-buntansha) 内田 俊  早稲田大学, 理工学術院, 助教 (60777986)
Project Period (FY) 2018-04-01 – 2025-03-31
Project Status Granted (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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放物型方程式論 / 非線型楕円型方程式 / ecosystems / gradient flow / 非線型境界値問題 / 集合値項を持つ偏微分方程式 / 強消散項を持つ波動方程式 / 二重非線型放物型方程式 / 複素ギンツブルグ - ランダウ方程式 / ミトコンドリア膨潤モデル / 複素ギンツブルグ・ランダウ方程式 / 複素ギンツブルグ-ランダウ方程式 / 二重拡散対流方程式 / L∞エネルギー法 / 非線形放物型方程式 / 集合値関数
Outline of Annual Research Achievements

(1) 二つの極大単調作用素の和は必ずしも極大単調作用素にならない事はよく知られておりその和が極大単調となる為の十分条件に関する研究が既に多く存在していたが,従来の研究では扱われていなかった,摂動項が極大単調ではない多価作用素である場合にも扱える新たな枠組みでの摂動論が構築された.
(2) 我々が既に示した「パラメータαに依存するある非線形境界条件を満たす有界領域における藤田型方程式に対して,時間大域解の存在・非存在をわける閾値が存在する」という事実をもとに,パラメータαに依存する非斉次ディリクレ型境界条件に従う藤田型方程式の定常問題に相当する非線形楕円型方程式にも,非自明解の存在・非存在をわける閾値が存在することが明らかになった.
(3) 外来種植物の浸食による在来植物種の消滅による ecosystems の崩壊が New Zealand, South Africa, Chile など全世界で最近深刻な問題となっている. この現象を数理モデル化した E. Hughes et al が最近導入した ODE-PDE ecosystems modelの数学的解析を行い,解の存在と一意性を示すことが出来た.
(4) 分数冪時間微分による時間発展する,時間依存する劣微分作用素に支配される
grandient flow の解の存在が示された.

Current Status of Research Progress
Current Status of Research Progress

3: Progress in research has been slightly delayed.

Reason

理由
新型コロナウイルスの世界的蔓延のため,海外出張が不可能となり,国内出張も制限され,国内外の研究協力者との研究連絡が困難な状況が続いていた為,
当初予定していた研究計画に遅延が生じていた.現状は改善されつつある.

Strategy for Future Research Activity

(1) p-Laplacian に支配される集合値項をもつ放物型方程式の可解性を従来のL^2空間の枠組みの理論をL^∞空間の枠組みに拡張することで,集合値項に課していたソボレフ劣臨界増大度の条件を外すことを目指す.
(2) ODE-PDE ecosystems model の解の漸近挙動は,ecology の観点からも重要であり,その為の第一段階として,定常状態の解析を行う.
(3) 分数冪時間微分による時間発展する,時間依存する劣微分作用素に支配される   grandient flow に対して,初期値が D.Brezis クラスの補間空間に属する場合の解のregularity が,D.Brezis による古典的な結果に一致することを確かめる.

Report

(6 results)
  • 2023 Research-status Report
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (49 results)

All 2023 2022 2021 2020 2019 2018

All Journal Article (16 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 16 results,  Open Access: 1 results) Presentation (33 results) (of which Int'l Joint Research: 9 results,  Invited: 21 results)

  • [Journal Article] On some quasilinear parabolic equations with non-monotone multivalued terms2023

    • Author(s)
      Mitsuharu Otani and Vasile Staicu
    • Journal Title

      Communications on Pure and Applied Analysis

      Volume: 22 Issue: 6 Pages: 1831-1865

    • DOI

      10.3934/cpaa.2023049

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The time-periodic problem of the viscous Cahn-Hilliard equation with homogeneous Dirichlet boundary condition2023

    • Author(s)
      Keiichiro Kagawa and Mitsuharu Otani
    • Journal Title

      Journal of Fixed Point Theory and Applications

      Volume: 25 Issue: 1

    • DOI

      10.1007/s11784-022-01044-6

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Periodic problems for doubly nonlinear evolution equations2022

    • Author(s)
      Masahiro Koike, Mitsuharu Otani and Shun Uchida
    • Journal Title

      Journal of Convex Analysis

      Volume: 29

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Asymptotic limits of viscous Cahn-Hilliard equation with homogeneous Dirichlet boundary condition2022

    • Author(s)
      Keiichiro Kagawa, Mitsuharu \^Otani
    • Journal Title

      Journal of Mathematical Analysis and Applications

      Volume: 512 Issue: 1 Pages: 126106-126106

    • DOI

      10.1016/j.jmaa.2022.126106

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] On a comparison theorem for parabolic equations with nonlinear boundary conditions2022

    • Author(s)
      Kita Kosuke、Otani Mitsuharu
    • Journal Title

      Advances in Nonlinear Analysis

      Volume: 11 Issue: 1 Pages: 1165-1181

    • DOI

      10.1515/anona-2022-0239

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Bounds for global solutions of nonlinear heat equations with nonlinear boundary conditions2021

    • Author(s)
      Kosuke Kita and Mitsuharu Otani
    • Journal Title

      Libertas Mathematica (new series)

      Volume: 41 Pages: 1-22

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Viscous Cahn-Hilliard Equation with Dirichlet Boundary Condition2020

    • Author(s)
      Keiichiro Kagawa and Mitsuharu Otani
    • Journal Title

      Advances in Mathematical Sciences and Applications

      Volume: 29 Pages: 35-63

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Mathematical analysis of a PDE-ODE coupled model of mitochondrial swelling with degenerate calcium Ion diffusion2020

    • Author(s)
      Efendiev Messoud A.、Otani Mitsuharu、Eberl Hermann J.
    • Journal Title

      SIAM Journal on Mathematical Analysis

      Volume: 52 Issue: 1 Pages: 543-569

    • DOI

      10.1137/18m1227421

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] On time-periodic solutions of some nonlinear parabolic equations with nonmonotone multivalued terms2019

    • Author(s)
      Otani Mitsuharu、Staicu Vasile
    • Journal Title

      Topological Methods in Nonlinear Analysis

      Volume: 54 Pages: 1075-1092

    • DOI

      10.12775/tmna.2019.092

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Local well-posedness of the complex Ginzburg-Landau equation in bounded domains2019

    • Author(s)
      Kuroda Takanori、Otani Mitsuharu
    • Journal Title

      Nonlinear Analysis: Real World Applications

      Volume: 45 Pages: 877-894

    • DOI

      10.1016/j.nonrwa.2018.08.006

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Bounds for global solutions of a reaction diffusion system with the Robin boundary conditions2019

    • Author(s)
      Kita Kosuke、Otani Mitsuharu
    • Journal Title

      Differential Equations & Applications

      Volume: 11 Issue: 2 Pages: 227-242

    • DOI

      10.7153/dea-2019-11-09

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] On some parabolic systems arising from a nuclear reactor model with nonlinear boundary conditions2018

    • Author(s)
      Kita, K., Otani, M. and Sakamoto, H.
    • Journal Title

      Adv. Math. Sci. Appl.

      Volume: 27 Pages: 193-224

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Initial-boundary value problems for complex Ginzburg-Landau equations governed by p-Laplacian in general domains2018

    • Author(s)
      Kuroda, T. and Otani, M.
    • Journal Title

      Libertas Mathematica (new series)

      Volume: 38 Pages: 67-104

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Analysis of a PDE model of the swelling of mitochondria accounting for spatial movement2018

    • Author(s)
      Efendiev, M. A., Otani, M. and Eberl, H. J.
    • Journal Title

      Mathematical Methods in the Applied Sciences

      Volume: 41(5) Issue: 5 Pages: 2162-2177

    • DOI

      10.1002/mma.4742

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Existence of time periodic solution to some double-diffusive convection system in the whole space domain2018

    • Author(s)
      Otani, M. and Uchida, S.
    • Journal Title

      Journal of Mathematical Fluid Mechanics

      Volume: 20(3) Issue: 3 Pages: 1035-1058

    • DOI

      10.1007/s00021-017-0354-1

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] L∞-energy method for a parabolic system with convection and hysteresis effect2018

    • Author(s)
      Minchev, E. and Otani, M.
    • Journal Title

      Communications on Pure and Applied Analysis

      Volume: 17(4) Issue: 4 Pages: 1613-1632

    • DOI

      10.3934/cpaa.2018077

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] On critical phenomena for nonlinear heat equations on bounded domains characterized by nonlinear boundary conditions2023

    • Author(s)
      Kosueke Kita and Mitsuharu Otani
    • Organizer
      The 13th AIMS Conference on Dynamical Systems
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Existence and nonexistence of global solutions for Fujita-type equations with some nonlinear boundary conditions2023

    • Author(s)
      Mitsuharu Otani
    • Organizer
      Nonlinear Phenomena in Biology, Ecology, Physics and Mechanics
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Asymptotic behaviors of complex solutions for the semilinear heat equation with arbitrarily large initial energy2023

    • Author(s)
      黒田 隆徳
    • Organizer
      日本数学会2023年度年会, 実函数論分科会, 中央大学
    • Related Report
      2022 Research-status Report
  • [Presentation] Global existence and blow-up of solutions to nonlinear heat equations with nonlinear boundary conditions2023

    • Author(s)
      喜多 航佑
    • Organizer
      第38回さいたま数理解析セミナー, 大宮ソニックシティ
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Mosco convergence of functionals associated with Laplacian under nonlinear boundary conditions2023

    • Author(s)
      喜多 航佑
    • Organizer
      日本数学会2023年度年会, 実函数論分科会, 中央大学
    • Related Report
      2022 Research-status Report
  • [Presentation] Existence and non-existence of stationary solutions of the complex Ginzburg-Landau equations2022

    • Author(s)
      黒田 隆徳
    • Organizer
      日本数学会2022年度秋季総合分科会, 実函数論分科会, 北海道大学
    • Related Report
      2022 Research-status Report
  • [Presentation] Existence and nonexistence of global solutions to nonlinear diffusion equations with nonlinear boundary conditions2022

    • Author(s)
      喜多 航佑
    • Organizer
      第763回 応用解析研究会, 早稲田大学
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Existence and nonexistence of global solutions to nonlinear diffusion equations on a bounded domain2022

    • Author(s)
      喜多 航佑
    • Organizer
      日本数学会2022年度秋季総合分科会, 実函数論分科会, 北海道大学
    • Related Report
      2022 Research-status Report
  • [Presentation] Viscous Cahn-Hilliard方程式の解の方程式内係数に関する漸近極限問題2022

    • Author(s)
      香川 渓一郎
    • Organizer
      非線形発展方程式セミナー@KUE, 京都教育大学
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Existence of solutions for initial value problem of viscous Cahn-Hilliard equation with dynamic boundary condition2022

    • Author(s)
      香川 渓一郎
    • Organizer
      日本数学会2022年度秋季総合分科会, 実函数論分科会, 北海道大学
    • Related Report
      2022 Research-status Report
  • [Presentation] Qualitative theory of solutions to parabolic equations with nonlinear boundary conditions2022

    • Author(s)
      喜多 航佑
    • Organizer
      大分解析セミナー
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Existence and nonexistence of global solutions for nonlinear heat equations with nonlinear boundary conditions2022

    • Author(s)
      喜多 航佑
    • Organizer
      Critical Exponent and Nonlinear Partial Differential Equations
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Existence and nonexistence of global solutions for nonlinear heat equations on a bounded domain2022

    • Author(s)
      喜多 航佑
    • Organizer
      第18回数学総合若手研究集会 数学の交叉点
    • Related Report
      2021 Research-status Report
  • [Presentation] 放物型方程式論に基づく複素 Ginzburg-Landau 方程式の時間周期問題2022

    • Author(s)
      黒田 隆徳
    • Organizer
      第 35 回さいたま数理解析セミナー
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Convergence of functional associated with Laplacian under nonlinear boundary conditions2021

    • Author(s)
      喜多 航佑
    • Organizer
      第42回発展方程式若手セミナー
    • Related Report
      2021 Research-status Report
  • [Presentation] On the global existence and blow-up of solutions for nonlinear heat equations on bounded domains2021

    • Author(s)
      喜多 航佑
    • Organizer
      第47回発展方程式研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] 二重非線型抽象発展方程式の時間周期問題の可解性について2021

    • Author(s)
      内田 俊
    • Organizer
      第4回 反応拡散方程式と非線形分散型方程式の解の挙動
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 非線形境界条件を伴う非線形熱方程式に対する臨界現象について2021

    • Author(s)
      喜多 航佑
    • Organizer
      One Day Workshop抽象発展方程式のこれまでとこれから -動的境界条件への応用を見据えて-
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Dirichlet境界条件下でのViscous Cahn-Hilliard方程式の初期値問題2021

    • Author(s)
      香川 渓一郎
    • Organizer
      非線形発展方程式セミナー@KUE
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] On some nonlinear heat equations with nonlinear boundary conditions of radiation type2020

    • Author(s)
      喜多 航佑
    • Organizer
      第9回非線形発展方程式セミナー
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 非線形境界条件に支配される比較定理とその応用について2020

    • Author(s)
      喜多 航佑
    • Organizer
      第7回 Elliptic and Parabolic Zoom Seminar
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Comparison Theorem for Parabolic Equations Governed by Nonlinear Boundary Conditions and Its Applications2020

    • Author(s)
      喜多 航佑
    • Organizer
      International Workshop on Multiphase Flows: Analysis, Modelling and Numerics
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] On the uniform boundedness for global solutions of nonlinear heat equations with nonlinear boundary conditions in bounded domain2019

    • Author(s)
      喜多航佑、大谷光春
    • Organizer
      日本数学会2019年度秋季総合分科会 (金沢大)
    • Related Report
      2019 Research-status Report
  • [Presentation] Periodic problem of the complex Ginzburg-Landau equation with focusing nonlinearity2019

    • Author(s)
      黒田隆徳、大谷光春
    • Organizer
      日本数学会2019年度秋季総合分科会 (金沢大)
    • Related Report
      2019 Research-status Report
  • [Presentation] Time periodic problem for the viscous Cahn-Hilliard equation with the homogeneous Dirichlet boundary condition2019

    • Author(s)
      香川渓一郎、大谷光春
    • Organizer
      日本数学会2019年度秋季総合分科会 (金沢大)
    • Related Report
      2019 Research-status Report
  • [Presentation] Asymptotic limits of the time-periodic problem for the viscous Cahn-Hilliard equation2019

    • Author(s)
      香川渓一郎、大谷光春
    • Organizer
      日本数学会 2020年度年会 (日大理工)
    • Related Report
      2019 Research-status Report
  • [Presentation] Complex Ginzburg-Landau equations as parabolic equations2019

    • Author(s)
      黒田隆徳、大谷光春
    • Organizer
      Applied Mathematics and PDEs, Part II, RACMaS (Research Alliance Center forMathematical Sciences) Lectures, Sendai
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] What is the parabolicity ?2019

    • Author(s)
      大谷光春
    • Organizer
      「第15 回 非線型の諸問題」  於 熊本大学
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] The origin of the parabolicity of strongly damped wave equations2019

    • Author(s)
      大谷光春
    • Organizer
      RIMS 共同研究(公開型) 「発展方程式論の新展開:数理理論と現象解析の協働」
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Right-Differentiability of Solution to Nonlinear Evolution Equations with Perturbation2018

    • Author(s)
      Otani, M. and Uchida, S.
    • Organizer
      The 12th AIMS Conference on Dynamical Systems, Differential Equations and Applications
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Global Existence of the Solutions for the Complex Ginzburg-Landau Equations with P-Laplacian2018

    • Author(s)
      Kuroda, T. and Otani, M.
    • Organizer
      The 12th AIMS Conference on Dynamical Systems, Differential Equations and Applications
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] On Some Parabolic System Arising from a Nuclear Reactor Model with Nonlinear Boundary Conditions2018

    • Author(s)
      Kita, K. and Otani, M.
    • Organizer
      The 12th AIMS Conference on Dynamical Systems, Differential Equations and Applications
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] On the Existence of the Global Solutions of the Viscous Cahn-Hilliard Equation2018

    • Author(s)
      Kagawa, K. and Otani, M.
    • Organizer
      The 12th AIMS Conference on Dynamical Systems, Differential Equations and Applications
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2018-04-23   Modified: 2024-12-25  

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