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Lotka-Volterra型の2種走化性方程式系の数学解析

Research Project

Project/Area Number 17J00101
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Research Field Mathematical analysis
Research InstitutionTokyo University of Science

Principal Investigator

水上 雅昭  東京理科大学, 理学部第一部, 特別研究員(PD)

Project Period (FY) 2017-04-26 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2019: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2018: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2017: ¥1,100,000 (Direct Cost: ¥1,100,000)
Keywords非線形放物型方程式 / 走化性方程式 / Lotka-Volterra競合モデル / Navier-Stokes方程式 / 解の有界性 / 解の挙動
Outline of Annual Research Achievements

本研究課題では, 近年活発に研究されている走化性方程式と古くから研究されているLotka-Volterraの競合モデルの関係を調べるために, この2つの問題を組み合わせたLotka-Volterra型の2種走化性方程式について扱う. 特に, Lotka-Volterra型の2種走化性方程式の時間大域解の存在や解のふるまいを明らかにすることが主なテーマである.2019年度は2018年度の研究で得た知見を基に研究を行い, 次のような結果を得た.
1. 走化性方程式とLotka-Volterra競合モデルの関係について研究を行い, 走化性方程式の解がLotka-Volterra競合モデルの解に時間局所的に一様収束することを示した.
2. 生物や細胞の移動が膜などにより制限される状況を記述する問題の解構造について, 東京理科大学の横田智巳先生と小野達彦氏との共同研究で, 局所解の存在および大域解の存在と有界性を示した. さらに, 東京理科大学の横田智巳先生と千代田有加氏との共同研究で, 爆発解が存在するための条件を導出した.
3. Paderborn大学のJohannes Lankeit氏とMario Fuest氏との共同研究で, 走化性方程式をより現実的な境界条件の下で考え, 解が非定数関数に収束することを示した.
4. Paderborn大学のJohannes Lankeit氏, Tobias Black氏, Mario Fuest氏との共同研究で, Lotka-Volterra型の2種走化性方程式の爆発解の性質を導くための第一歩として, 1種の生物の場合であるロジスティック項をもつ走化性方程式の爆発解の性質について研究を行い, 本研究では, 解が爆発する点を調べる際の重要な評価を得ることができた.

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (30 results)

All 2019 2018 2017 Other

All Int'l Joint Research (4 results) Journal Article (11 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 11 results,  Open Access: 1 results) Presentation (15 results) (of which Int'l Joint Research: 6 results,  Invited: 7 results)

  • [Int'l Joint Research] パーダーボルン大学(ドイツ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] パーダーボルン大学(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] パーダーボルン大学(ドイツ)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] マドリード工科大学(スペイン)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Extensibility criterion ruling out gradient blow-up in a quasilinear degenerate chemotaxis system with flux limitation2019

    • Author(s)
      Mizukami Masaaki、Ono Tatsuhiko、Yokota Tomomi
    • Journal Title

      Journal of Differential Equations

      Volume: 267 Issue: 9 Pages: 5115-5164

    • DOI

      10.1016/j.jde.2019.05.026

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Finite-Time Blow-up in a Quasilinear Degenerate Chemotaxis System with Flux Limitation2019

    • Author(s)
      Chiyoda Yuka、Mizukami Masaaki、Yokota Tomomi
    • Journal Title

      Acta Applicandae Mathematicae

      Volume: 167 Issue: 1 Pages: 231-259

    • DOI

      10.1007/s10440-019-00275-z

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The fast signal diffusion limit in a Keller-Segel system2019

    • Author(s)
      Masaaki Mizukami
    • Journal Title

      Journal of Mathematical Analysis and Applications

      Volume: 472 Issue: 2 Pages: 1313-1330

    • DOI

      10.1016/j.jmaa.2018.11.077

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Global weak solutions to a 3-dimensional degenerate and singular chemotaxis-Navier-Stokes system with logistic source2019

    • Author(s)
      Shunsuke Kurima、Masaaki Mizukami
    • Journal Title

      Nonlinear Analysis: Real World Applications

      Volume: 46 Pages: 98-115

    • DOI

      10.1016/j.nonrwa.2018.09.011

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Keller-Segel-fluid system with singular sensitivity: Generalized solutions2019

    • Author(s)
      Tobias Black、Johannes Lankeit、Masaaki Mizukami
    • Journal Title

      Mathematical Methods in the Applied Sciences

      Volume: 印刷中 Issue: 9 Pages: 3002-3020

    • DOI

      10.1002/mma.5561

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Stabilization in the Keller-Segel system with signal-dependent sensitivity2019

    • Author(s)
      Black Tobias、Lankeit Johannes、Mizukami Masaaki
    • Journal Title

      Applicable Analysis

      Volume: 印刷中 Issue: 16 Pages: 2877-2891

    • DOI

      10.1080/00036811.2019.1585534

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The fast signal diffusion limit in a chemotaxis system with strong signal sensitivity2018

    • Author(s)
      Mizukami Masaaki
    • Journal Title

      Mathematische Nachrichten

      Volume: 印刷中 Issue: 8-9 Pages: 1342-1355

    • DOI

      10.1002/mana.201700270

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Singular sensitivity in a Keller-Segel-fluid system2018

    • Author(s)
      Black Tobias、Lankeit Johannes、Mizukami Masaaki
    • Journal Title

      Journal of Evolution Equations

      Volume: 印刷中 Issue: 2 Pages: 561-581

    • DOI

      10.1007/s00028-017-0411-5

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Boundedness and stabilization in a two-dimensional two-species chemotaxis-Navier?Stokes system with competitive kinetics2017

    • Author(s)
      Hirata Misaki、Kurima Shunsuke、Mizukami Masaaki、Yokota Tomomi
    • Journal Title

      Journal of Differential Equations

      Volume: 263 Issue: 1 Pages: 470-490

    • DOI

      10.1016/j.jde.2017.02.045

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Boundedness and stabilization in a three-dimensional two-species chemotaxis-Navier-Stokes system with competitive kinetics2017

    • Author(s)
      Hirata Misaki、Kurima Shunsuke、Mizukami Masaaki、Yokota Tomomi
    • Journal Title

      Proceedings of EQUADIFF 2017 Conference

      Volume: 1 Pages: 11-20

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Boundedness and stabilization in a two-species chemotaxis-competition system of parabolic-parabolic-elliptic type2017

    • Author(s)
      Mizukami Masaaki
    • Journal Title

      Mathematical Methods in the Applied Sciences

      Volume: 41 Issue: 1 Pages: 234-249

    • DOI

      10.1002/mma.4607

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Presentation] On the relation between fully parabolic and parabolic-elliptic Keller-Segel systems2019

    • Author(s)
      水上雅昭
    • Organizer
      第163回神楽坂解析セミナー
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Absence of gradient blow-up in a quasilinear degenerate chemotaxis system with flux limitation2019

    • Author(s)
      水上雅昭、小野達彦、横田智巳
    • Organizer
      日本数学会 2019年度秋季総合分科会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Blow-up in a quasilinear degenerate chemotaxis system with flux limitation2019

    • Author(s)
      千代田有加、水上雅昭、横田智巳
    • Organizer
      日本数学会 2019年度秋季総合分科会
    • Related Report
      2019 Annual Research Report
  • [Presentation] The fast signal diffusion limit in a minimal Keller-Segel system under smallness conditions for initial data2019

    • Author(s)
      Masaaki Mizukami
    • Organizer
      Equadiff 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Asymptotic behavior of solutions to a Keller-Segel system with signal-dependent sensitivity2019

    • Author(s)
      Black Tobias、Lankeit Johannes、水上雅昭
    • Organizer
      日本数学会 2019年度年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 感応性関数をもつKeller-Segel 系の大域解の存在と有界性2018

    • Author(s)
      水上雅昭
    • Organizer
      東北大学応用数学セミナー
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Existence of global generalized solutions to a Keller-Segel-Stokes system with singular sensitivity2018

    • Author(s)
      水上雅昭
    • Organizer
      第40回発展方程式若手セミナー
    • Related Report
      2018 Annual Research Report
  • [Presentation] A remark on the result by Zhang-Li in a three-dimensional chemotaxis-Navier-Stokes system with nonlinear diffusion2018

    • Author(s)
      Masaaki Mizukami
    • Organizer
      Oberseminar Nichtlineare Analysis
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] The fast signal diffusion limit in a Keller-Segel system under smallness conditions for initial data2018

    • Author(s)
      Masaaki Mizukami
    • Organizer
      The 12th AIMS Conference on Dynamical Systems, Differential Equations and Applications
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] The parabolic-elliptic Keller-Segel case as a limit of the fully parabolic Keller-Segel system under smallness conditions for initial data2018

    • Author(s)
      Masaaki Mizukami
    • Organizer
      The 3rd International Workshop on Mathematical Analysis of Chemotaxis
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] How far does small chemotactic interaction perturb the Fisher-KPP dynamics on a bounded domain?2017

    • Author(s)
      水上雅昭
    • Organizer
      日本数学会 2017年度秋季総合分科会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Convergence of solutions for a chemotaxis system with logistic term to those of a Fisher-KPP equation2017

    • Author(s)
      水上雅昭
    • Organizer
      若手研究者による実解析と偏微分方程式2017
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] The parabolic-elliptic chemotaxis case as a limit of the fully parabolic chemotaxis system with signal-dependent sensitivity2017

    • Author(s)
      水上雅昭
    • Organizer
      日本数学会 2018年度年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Relation between a fully parabolic type and a parabolic-elliptic type in Keller-Segel systems with signal-dependent sensitivity2017

    • Author(s)
      Masaaki Mizukami
    • Organizer
      Oberseminar Nichtlineare Analysis
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Stabilization in a two-species chemotaxis-competition system2017

    • Author(s)
      Masaaki Mizukami
    • Organizer
      Equadiff 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research

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Published: 2017-05-25   Modified: 2024-03-26  

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