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Mathematical analysis of Keller-Segel-fluid systems

Research Project

Project/Area Number 15K17578
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Mathematical analysis
Research InstitutionChiba University (2016-2022)
Tokyo University of Science (2015)

Principal Investigator

Ishida Sachiko  千葉大学, 大学院理学研究院, 准教授 (60712057)

Project Period (FY) 2015-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Keywords走化性方程式 / 癌浸潤モデル / 大域可解性 / 解の有界性 / 解の安定化 / 間接的走化性方程式 / 解の安定性 / ケラー・シーゲル系 / 解の爆発 / 解の有限時間爆発 / 時間大域可解性 / 解の挙動 / 関数方程式論
Outline of Final Research Achievements

The purpose of this project is the basic analysis of a mathematical model describing chemotaxis (the property of a slime mold to move in a specific direction along a concentration gradient of a chemical substance). We have proved the boundedness and finite-time blow-up of the solution to a chemotaxis model with a degenerate diffusion term, and partially clarified the condition which separates the two. Next, for a chemotaxis model arising from tumor invasion, we showed its solvability and stabilization as time tends infinity. We also proved stabilization for parabolic equations with divergence form such that these two models are inclueded.

Academic Significance and Societal Importance of the Research Achievements

[学術的意義]解の有界性と弱位相でのヘルダー連続性を用いて、発散型放物型方程式に対する有界な解の安定化を証明した。いくつかの条件が必要になるが、この手法は走化性モデルに分類される多様な系に適用することができ、統一的に扱えるようになった。
[社会的意義]走化性とは細胞や生物の基本的な誘導システムのことで、細胞性粘菌の集合体形成、免疫システム、胚発生などの生物的機能に現れる重要な性質である。その応用は幅広く、社会科学分野にも取り入れられているため、走化性モデルの解析は数学分野だけでなく他分野への貢献が期待できる。

Report

(9 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (33 results)

All 2023 2022 2021 2020 2019 2018 2017 2015 Other

All Int'l Joint Research (2 results) Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (18 results) (of which Int'l Joint Research: 6 results,  Invited: 11 results) Remarks (5 results) Funded Workshop (2 results)

  • [Int'l Joint Research] Leibniz Universitat Hannover(ドイツ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Universita di Cagliari(イタリア)

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Stabilization in degenerate parabolic equations in divergence form and application to chemotaxis systems2023

    • Author(s)
      Sachiko Ishida, Tomomi Yokota
    • Journal Title

      Archivum Mathematicum

      Volume: 59 Issue: 2 Pages: 181-189

    • DOI

      10.5817/am2023-2-181

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Application of weak stabilization theory for degenerate parabolic equations in divergence form to a chemotaxis model for tumor invasion2022

    • Author(s)
      Ishida Sachiko、Yokota Tomomi
    • Journal Title

      Discrete and Continuous Dynamical Systems - B

      Volume: 28 Issue: 10 Pages: 5296-5306

    • DOI

      10.3934/dcdsb.2022256

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Weak stabilization in degenerate parabolic equations in divergence form: application to degenerate Keller--Segel systems2022

    • Author(s)
      Ishida Sachiko、Yokota Tomomi
    • Journal Title

      Calculus of Variations and Partial Differential Equations

      Volume: 61 Issue: 3 Pages: 1-21

    • DOI

      10.1007/s00526-022-02203-w

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Finite-time blow-up for quasilinear degenerate Keller--Segel systems of parabolic-parabolic type2018

    • Author(s)
      Hashira Takahiro、Ishida Sachiko、Yokota Tomomi
    • Journal Title

      Journal of Differential Equations

      Volume: 264 Issue: 10 Pages: 6459-6485

    • DOI

      10.1016/j.jde.2018.01.038

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Boundedness in a quasilinear fully parabolic Keller--Segel system via maximal Sobolev regularity2018

    • Author(s)
      Sachiko Ishida, Tomomi Yokota
    • Journal Title

      Special issue of the Journal "Discrete and Dynamical Systems - S" with title Analysis of cross-diffusion systems

      Volume: 印刷中

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Large time behavior in a chemotaxis model with nonlinear general diffusion for tumor invasion2018

    • Author(s)
      Kentarou Fujie, Sachiko Ishida, Akio Ito, Tomomi Yokota
    • Journal Title

      Funkcialaj Ekvacioj

      Volume: 61 Pages: 37-80

    • NAID

      130006726044

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] Large time behavior for weak solutions of parabolic equations with $L^1$-conservation law2021

    • Author(s)
      石田祥子
    • Organizer
      第47回 発展方程式研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] Large time behavior for weak solutions of parabolic equations in divergence form2021

    • Author(s)
      Sachiko Ishida
    • Organizer
      The Mini International Workshop on Mathematical Analysis of Chemotaxis
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] L^1 -保存則をもつ放物型方程式に対する弱解の安定化2020

    • Author(s)
      石田祥子
    • Organizer
      日本数学会 2020年度秋季総合分科会
    • Related Report
      2020 Research-status Report
  • [Presentation] Weak stabilization of solutions for parabolic equations in divergence form2020

    • Author(s)
      石田祥子
    • Organizer
      第 713 回応用解析研究会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Weak stabilization in Keller--Segel systems with degenerate diffusion2020

    • Author(s)
      石田祥子
    • Organizer
      日本数学会2020年度年会
    • Related Report
      2019 Research-status Report
  • [Presentation] Boundedness, asymptotic behaviour vs. finite-time blow-up for quasilinear Keller--Segel model2019

    • Author(s)
      Sachiko Ishida
    • Organizer
      Equadiff 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Boundedness and weak stabilization in Keller--Segel systems with porous medium diffusion2019

    • Author(s)
      Sachiko Ishida
    • Organizer
      Chemotaxis and Nonlinear Parabolic Equations
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 準線形退化放物・放物型Keller--Segel系の時間大域可解性と解の安定化2019

    • Author(s)
      石田祥子
    • Organizer
      第45回発展方程式研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] Finite-time blow-up in a quasilinear degenerate parabolic-parabolic Keller--Segel system2018

    • Author(s)
      Sachiko Ishida
    • Organizer
      The 3rd International Workshop on Mathematical Analysis of Chemotaxis
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Finite-time blow-up in a fully parabolic Keller--Segel system with degenerate diffusion2018

    • Author(s)
      石田祥子
    • Organizer
      日本数学会2018年度年会, 関数方程式分科会
    • Related Report
      2017 Research-status Report
  • [Presentation] Solvability and boundedness in a 2D chemotaxis-fluid system2017

    • Author(s)
      石田祥子
    • Organizer
      NLPDEセミナー
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 2 次元有界領域におけるchemotaxis-Navier--Stokes系の有界性について2017

    • Author(s)
      石田祥子
    • Organizer
      第6回岐阜数理科学研究会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Solvability and blow-up in fully parabolic degenerate Keller--Segel systems2017

    • Author(s)
      Sachiko Ishida
    • Organizer
      Mathematical seminar at University of Hawaii at Manoa
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Finite-time blow-up in a parabolic-parabolic Keller--Segel system with porous medium diffusion2017

    • Author(s)
      石田 祥子
    • Organizer
      第13回 非線型の諸問題
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Blow-up solution for a fully parabolic degenerate Keller--Segel system in the super critical case2017

    • Author(s)
      石田祥子
    • Organizer
      名古屋大学微分方程式セミナー
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Global solvability of a 2D coupled chemotaxis-uid system with position sensitivity2015

    • Author(s)
      石田 祥子
    • Organizer
      第3回大阪駅前セミナー
    • Place of Presentation
      龍谷大学大阪梅田キャンパス (大阪府, 大阪市)
    • Year and Date
      2015-10-09
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] Chemotaxis-Navier--Stokes系とその周辺の数学解2015

    • Author(s)
      石田 祥子
    • Organizer
      日本数学会2015年度秋季総合分科会 実函数論分科会
    • Place of Presentation
      京都産業大学 (京都府, 京都市)
    • Year and Date
      2015-09-13
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] Global Existence and Boundedness in A Quasilinear Chemotaxis-Navier--Stokes System with Position Dependent Sensitivity2015

    • Author(s)
      S. Ishida
    • Organizer
      The 8th International Congress on Industrial and Applied Mathematics
    • Place of Presentation
      北京 (中国)
    • Year and Date
      2015-08-10
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Remarks] Sachiko ISHIDA

    • URL

      https://sites.google.com/view/s-ishida/%E3%83%9B%E3%83%BC%E3%83%A0

    • Related Report
      2022 Annual Research Report 2019 Research-status Report
  • [Remarks] 石田祥子リサーチマップ

    • URL

      https://researchmap.jp/ishidasachiko

    • Related Report
      2022 Annual Research Report
  • [Remarks] Sachiko ISHIDA Home page

    • URL

      https://sites.google.com/view/s-ishida/%E3%83%9B%E3%83%BC%E3%83%A0

    • Related Report
      2021 Research-status Report
  • [Remarks]

    • URL

      https://sites.google.com/view/s-ishida/%E3%83%9B%E3%83%BC%E3%83%A0

    • Related Report
      2020 Research-status Report
  • [Remarks] Sachiko Ishida

    • URL

      https://sites.google.com/view/s-ishida/%E3%83%9B%E3%83%BC%E3%83%A0

    • Related Report
      2018 Research-status Report
  • [Funded Workshop] The 6th International Workshop on Mathematical Analysis of Chemotaxis2023

    • Related Report
      2022 Annual Research Report
  • [Funded Workshop] The 2nd InternationalWorkshop on Mathematical Analysis of Chemotaxis mini2022

    • Related Report
      2021 Research-status Report

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Published: 2015-04-16   Modified: 2024-01-30  

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