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Discretization of Sobolev inequalities and its engineering applications

Research Project

Project/Area Number 25400146
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Basic analysis
Research InstitutionTsuda University (2017-2018)
Nihon University (2013-2016)

Principal Investigator

Nagai Atsushi  津田塾大学, 学芸学部, 教授 (90304039)

Co-Investigator(Kenkyū-buntansha) 亀高 惟倫  大阪大学, その他部局等, 名誉教授 (00047218)
Project Period (FY) 2013-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywordsグリーン関数 / ソボレフ不等式 / 離散化 / 最良定数 / C60 / グラフ / 離散 / グラフ理論 / 完全2部グラフ / グリーン行列 / 一般化逆行列 / 再生核 / フラーレン / 離散ソボレフ不等式 / 多面体 / 離散ラプラシアン / 正多面体 / 境界値問題
Outline of Final Research Achievements

We first formulated boundary value problems for differential or difference equations which appear in the field of engineerings and found their Green functions or Green matrices. The Green functions or matrices are reproducing kernels for a suitable Hilbert space. From reproducing relations, Sobolev inequalities and their discrete version are derived. The equality conditions for the inequalities are found, that is to say, the best constant and the best function which attains = in the inequality are found by investigating the Green functions or matrices. In particular, discrete Sobolev inequalities for C60 fullerene and fundamental graphs are derived, together with the best constants and the best functions.

Academic Significance and Societal Importance of the Research Achievements

工学上重要な微分方程式や差分方程式の境界値問題に対してグリーン関数やグリーン行列を厳密に求めることは、工学の問題の数学的基礎付けを与えることに相当する。また対応するソボレフ不等式や離散ソボレフ不等式はC60フラーレンを例にとると、C60を構成する各分子の変位の最大値をC60のエネルギーの定数倍で評価する不等式である。また最良定数はC60の硬さを表す1つの指標であり、工学上の意味は大きいと確信している。

Report

(7 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (12 results)

All 2017 2016 2015 2014 2013

All Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 5 results,  Acknowledgement Compliant: 4 results) Presentation (5 results)

  • [Journal Article] A Hierarchical Structure for the Sharp Constants of Discrete Sobolev Inequalities on a Weighted Complete Graph2017

    • Author(s)
      Kazuo Takemura, Yoshinori Kametaka and Atsushi Nagai
    • Journal Title

      Symmetry

      Volume: 2017 Issue: 1 Pages: 1-1

    • DOI

      10.3390/sym10010001

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Two types of discrete Sobolev inequalities on a weighted Toeplitz graph2016

    • Author(s)
      Kazuo Takemura, Atsushi Nagai, Yoshinori Kametaka
    • Journal Title

      Linear Algebra and its Applicatoins

      Volume: 507 Pages: 344-355

    • DOI

      10.1016/j.laa.2016.06.029

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] 切頂正4,6,8面体上の離散ソボレフ不等式の最良定数2015

    • Author(s)
      亀高惟倫,山岸弘幸,永井敦,渡辺宏太郎,武村一雄
    • Journal Title

      日本応用数理学会論文誌

      Volume: 25

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] The Best Cosntant of Discrete Sobolev Inequality on the C60 Fullerene Buckyball2015

    • Author(s)
      Y. Kametaka, A. Nagai, H. Yamagishi, K. Takemura and K. Watanabe
    • Journal Title

      Journal of Physical Society of Japan

      Volume: 84 Issue: 7 Pages: 074004-074004

    • DOI

      10.7566/jpsj.84.074004

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Sobolev inequality of free boundary value problem for (-1)M(d/dx)(2M)2015

    • Author(s)
      K. Takemura, A. Nagai, Y. Kametaka, K. Watanabe, H. Yamagishi
    • Journal Title

      J. of Inequality and Appl.

      Volume: 2015 Issue: 1 Pages: 1-20

    • DOI

      10.1186/s13660-015-0568-9

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Complete low-cut filter and the best constant of Sobolev inequality2013

    • Author(s)
      H. Yamagishi, Y. Kametaka, A. Nagai, K. Watanabe and K. Takemura
    • Journal Title

      JSIAM Letters

      Volume: 5 Pages: 33-36

    • NAID

      130003371118

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] The best estimation corresponding to continuous model of Thomson cable2013

    • Author(s)
      H. Yamagishi, Y. Kametaka, A. Nagai, K. Watanabe and K. Takemura
    • Journal Title

      JSIAM Letters

      Volume: 5 Pages: 53-56

    • NAID

      130003371123

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] 13種C60フラーレンと離散ソボレフ不等式の最良定数2015

    • Author(s)
      亀高 惟倫, 永井 敦, 山岸 弘幸, 武村 一雄, 渡辺 宏太郎
    • Organizer
      日本応用数理学会
    • Place of Presentation
      金沢大学(石川県金沢市角間町)
    • Year and Date
      2015-09-09
    • Related Report
      2015 Research-status Report
  • [Presentation] カーボンナノチューブトーラス上の離散ソボレフ不等式の最良定数2015

    • Author(s)
      山岸 弘幸, 亀高 惟倫, 永井 敦
    • Organizer
      日本応用数理学会
    • Place of Presentation
      明治大学
    • Year and Date
      2015-03-06 – 2015-03-07
    • Related Report
      2014 Research-status Report
  • [Presentation] カーボンナノチューブ上での離散ソボレフ不等式の最良定数2014

    • Author(s)
      山岸 弘幸, 亀高 惟倫, 永井 敦
    • Organizer
      日本応用数理学会
    • Place of Presentation
      政策研究大学院大学
    • Year and Date
      2014-09-05 – 2014-09-07
    • Related Report
      2014 Research-status Report
  • [Presentation] 切頂正多面体上の離散ソボレフ不等式の最良定数2014

    • Author(s)
      山岸弘幸,亀高惟倫,永井敦,渡辺宏太朗,武村一雄
    • Organizer
      応用数理学会
    • Place of Presentation
      京都大学
    • Related Report
      2013 Research-status Report
  • [Presentation] (-1)M(d/dx)2M のディリクレ・ノイマン境界値問題に対応するLp ソボ レフ不等式の最良定数2014

    • Author(s)
      山岸弘幸,亀高惟倫,永井敦,渡辺宏太朗,武村一雄
    • Organizer
      日本数学会
    • Place of Presentation
      学習院大学
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2023-07-20  

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