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複合媒質における新しいSerrin型優決定問題

Research Project

Project/Area Number 18J11430
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Research Field Mathematical analysis
Research InstitutionTohoku University

Principal Investigator

Cavallina Lorenzo  東北大学, 情報科学研究科, 特別研究員(PD)

Project Period (FY) 2018-04-25 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥900,000 (Direct Cost: ¥900,000)
Keywords優決定問題 / 自由境界問題 / 複合媒質 / 放物型方程式 / 楕円型方程式 / 分岐現象 / 最適化問題 / 数値計算アルゴリズム
Outline of Annual Research Achievements

研究目的は複合媒質における放物型及び楕円型優決定問題の解の幾何学的性質を明らかにすることであった。主な研究成果は二つある.
① 論文L.Cavallina, T.Yachimura, "On a two-phase Serrin-type problem and its numerical computation" ではSerrinの優決定問題の一般化としての複合媒質に関する二相円型優決定問題を考えた。二つの相における伝導率の比が「臨界値」でない場合、同心球でない解(非自明解)もまた存在することを上述の論文で示した。伝導率の比が「臨界値」の場合は、論文L. Cavallina, T. Yachimura, "Symmetry breaking solutions for a two-phase overdetermined problem of Serrin-type", (Research Perspective series of Birkhauserに掲載決定)で解析された。伝導率の比がcritical valueの時、Crandall-Rabinowitzの定理を用いることによって、対称性の自発的破れが起こることを示した。主結果をより詳しく述べると、介在物が球のときの回転対称でない解の存在を示した。
② ユークリッド空間上で二相熱方程式におけるコーシー問題を考える。ここで各相における熱伝導率が異なり、初期温度がそれぞれ0と1とする。さらに界面が一様にC^6級とする。このとき、時間と位置にも依存しない、一定の温度を持つ界面は超平面に限る。この結果を論文L.Cavallina,S.Sakaguchi,S.Udagawa,"A characterization of a hyperplane in two-phase heat conductors"(投稿中)で示した。

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

(2 results)
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (24 results)

All 2020 2019 2018 Other

All Int'l Joint Research (3 results) Journal Article (8 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (13 results) (of which Int'l Joint Research: 6 results,  Invited: 8 results)

  • [Int'l Joint Research] Lorraine大学/エコール・ポリテクニーク(フランス)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Firenze大学(イタリア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Firenze大学(イタリア)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Symmetry breaking solutions for a two-phase overdetermined problem of Serrin-type2020

    • Author(s)
      CAVALLINA Lorenzo, YACHIMURA Toshiaki
    • Journal Title

      to be published in the Research Perspective series of Birkhauser

      Volume: -

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On a two-phase Serrin-type problem and its numerical computation2019

    • Author(s)
      CAVALLINA Lorenzo, YACHIMURA Toshiaki
    • Journal Title

      ESAIM: Control, Optimisation and Calculus of Variations

      Volume: - Pages: 65-65

    • DOI

      10.1051/cocv/2019048

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Homogenization Method for Topology Optimization of Structures: Old and New2019

    • Author(s)
      ALLAIRE Gregoire, CAVALLINA Lorenzo, MIYAKE Nobuhito, OKA Tomoyuki, YACHIMURA Toshiaki
    • Journal Title

      Interdisciplinary Information Sciences

      Volume: 25 Issue: 2 Pages: 75-146

    • DOI

      10.4036/iis.2019.B.01

    • NAID

      130007772494

    • ISSN
      1340-9050, 1347-6157
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Two-phase heat conductors with a surface of the constant flow property2019

    • Author(s)
      CAVALLINA Lorenzo, MAGNANINI Rolando, SAKAGUCHI Shigeru
    • Journal Title

      Journal of Geometric Analysis

      Volume: - Issue: 1 Pages: 312-345

    • DOI

      10.1007/s12220-019-00262-8

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] On a two-phase shape optimization problem and its related overdetermined problem2019

    • Author(s)
      CAVALLINA Lorenzo
    • Journal Title

      計算工学講演会論文集Proceedings of the Conference on Computational Engineering and Science

      Volume: 24 Pages: 5-5

    • NAID

      40021914320

    • Related Report
      2019 Annual Research Report
  • [Journal Article] On a two-phase overdetermined problem of Serrin type2019

    • Author(s)
      Cavallina Lorenzo
    • Journal Title

      Hokkaido University Preprint Series in Mathematics = 北海道大学数学講究録

      Volume: 176 Pages: 525-533

    • Related Report
      2018 Annual Research Report
    • Open Access
  • [Journal Article] Stability analysis of the two-phase torsional rigidity near a radial configuration2018

    • Author(s)
      Cavallina Lorenzo
    • Journal Title

      Applicable Analysis

      Volume: 0 Issue: 10 Pages: 1-12

    • DOI

      10.1080/00036811.2018.1478082

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A local analysis of the radial configuration for the two-phase torsion problem in the ball2018

    • Author(s)
      Cavallina Lorenzo
    • Journal Title

      RIMS 講究録

      Volume: 2082 Pages: 7-20

    • Related Report
      2018 Annual Research Report
    • Open Access
  • [Presentation] 二相等周問題について2020

    • Author(s)
      L. Cavallina, A. Henrot, S. Sakaguchi
    • Organizer
      日本数学会2020 年度年会函数 方程式論分科会, 日本大学理工学部(中止)
    • Related Report
      2019 Annual Research Report
  • [Presentation] 2 相熱伝導体における定温度を持つ界面の特徴付け2020

    • Author(s)
      L. Cavallina, S. Sakaguchi, S. Udagawa
    • Organizer
      日 本数学会2020 年度年会函数方程式論分科会, 日本大学理工学部(中止)
    • Related Report
      2019 Annual Research Report
  • [Presentation] 複合媒質における過剰決定問題について2019

    • Author(s)
      L. Cavallina
    • Organizer
      Mini-Workshop “Mathematical Physics and PDEs”, 東北大学
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] On a shape optimization problem for composite materials and its related overdetermined problem2019

    • Author(s)
      L. Cavallina
    • Organizer
      RIMS Workshop “Pattern formation and defects in biology and materials science”, 関西セミナーハウス
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] The double queen Dido’s problem2019

    • Author(s)
      L. Cavallina
    • Organizer
      Workshop Lorraine-Tohoku, Lorraine 大学
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On the pairs of domains that solve a two-phase overdetermined problem of 2 Serrin-type2019

    • Author(s)
      L. Cavallina
    • Organizer
      12th ISAAC Congress, Geometric & Regularity Properties of Solutions to Elliptic and Parabolic PDEs, Aveiro 大学
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On a variation of Serrin’s overdetermined problem in a two-phase setting: the geometry of non-trivial solutions2019

    • Author(s)
      L. Cavallina
    • Organizer
      RIMS 研究集会「界面運動,力学系に現れる漸近問題への粘性解 的手法とその周辺」, 京都大学
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On a two-phase shape optimization problem and its related overdertermined problem2019

    • Author(s)
      L. Cavallina
    • Organizer
      第24回計算工学講演会, 一般社団法人日本計算工学会主催ソニックシティ(大宮)
    • Related Report
      2019 Annual Research Report
  • [Presentation] On a two-phase overdetermined problem of Serrin-type2019

    • Author(s)
      Cavallina Lorenzo
    • Organizer
      第15回数学総合若手研究集会「数学の交叉点」, 北海道大学
    • Related Report
      2018 Annual Research Report
  • [Presentation] 二相Serrin型優決定問題とその数値計算について2019

    • Author(s)
      Cavallina Lorenzo
    • Organizer
      日本数学会2019年度年解函数方程式論分科会, 東京工業大学
    • Related Report
      2018 Annual Research Report
  • [Presentation] On a two-phase shape optimization problem and its related overdetermined problem2019

    • Author(s)
      Cavallina Lorenzo
    • Organizer
      第24回計算工学講演会, 一般社団法人日本計算工学会主催ソニックシティ(大宮)
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Local analysis of the torsional rigidity of a two-phase body under general perturbations2018

    • Author(s)
      Cavallina Lorenzo
    • Organizer
      Workshop on Nonlinear Partial Differential Equations: Japan-China Joint Project for Young Mathematicians 2018, 龍谷大学
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] The study of the two-phase torsion problem by means of shape derivatives2018

    • Author(s)
      Cavallina Lorenzo
    • Organizer
      Joint Firenze-Tohoku Research Workshop on Nonlinear PDEs, Firenze大学
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2018-05-01   Modified: 2024-03-26  

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