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Aymptotic expansions of fundamental solutions to heat equations and their apllications

Research Project

Project/Area Number 24540189
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Basic analysis
Research InstitutionUniversity of Hyogo

Principal Investigator

IWASAKI Chisato  兵庫県立大学, 物質理学研究科, 特命教授 (30028261)

Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords熱方程式 / 基本解 / 冪零リー群 / スペクトルゼータ函数 / subelliptic作用素 / 擬微分作用素 / Fokker-Planck作用素 / 国際研究者交流、ドイツ、USA / 放物型方程式 / Nilpotent リー群 / subelliptic 作用素 / 解析接続 / Kohn-Laplacian / 国際研究者交流,ドイツ、USA,台湾 / 国際研究者交流 / 固有値展開 / Fokker-Planck方程式 / nilmanifold / 変形ベッセル函数 / 国際研究者交流(ドイツ) / ベキ零リー群 / 退化楕円型作用素 / ゼータ関数 / フォッカープランク作用素
Outline of Final Research Achievements

I have researched methods of construction of the fundamental solution for heat equations corresponding to various kinds of subelliptic operators. This research is applicable to analyze both eigenvalues of operators and singularity of spectral zeta functions of subelliptic operators. Objects subelliptic operators of my research are the Fokker-Planck operator, subelliptic operators on spheres, operators on Nilpotent Lie groups.
In addition to this kind research I succeded to get the precise expression of the fundamental solution to degenerate elliptic operators, which are called operators of Grushin type. This study depends on theories of the modified Bessel functions. I show this method is also useful to study of Kohn-Laplacian which is deeply interested in complex analysis.
These results are published in six papers during the term of this aid.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (19 results)

All 2015 2014 2013 2012 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 2 results,  Acknowledgement Compliant: 2 results) Presentation (13 results) (of which Invited: 13 results)

  • [Journal Article] Fundamental solution of a higher step Grushin type operator2015

    • Author(s)
      Wolfram Bauer-Kenro Furutani-Chisato Iwasaki
    • Journal Title

      Advances in Mathematics

      Volume: 271 Pages: 188-234

    • DOI

      10.1016/j.aim.2014.11.017

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] The inverse of a parameter family of degenerate operators and applications to the Kohn-Laplacian2015

    • Author(s)
      Wolfram Bauer-Kenro Furutani-Chisato Iwasaki
    • Journal Title

      Advances in Mathematics

      Volume: 277 Pages: 283-337

    • DOI

      10.1016/j.aim.2014.12.041

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] A Representation of the Fundamental Solution for the Fokker-Planck equation and Its Application2014

    • Author(s)
      C.Iwasaki
    • Journal Title

      Fourier Analysis

      Volume: なし Pages: 211-233

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Trivializable sub-Riemannian structures on spheres2013

    • Author(s)
      Wolfram Bauer and Kenro Furutani and Chisato Iwasaki
    • Journal Title

      Bulletin des Sciences Math´ ematiques

      Volume: 137, No. 3 Issue: 3 Pages: 361-385

    • DOI

      10.1016/j.bulsci.2012.09.004

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Spectral zeta function of the sub-Laplacian on two step nilmanifolds2012

    • Author(s)
      W. Bauer-K. Furutani-C. Iwasaki
    • Journal Title

      J. Math. Pures Appl

      Volume: Vol.97 Issue: 3 Pages: 242-261

    • DOI

      10.1016/j.matpur.2011.06.003

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] An action function for a higher step Grushin operator2012

    • Author(s)
      Kenro Furutani, Chisato Iwasaki and Toshi- nao Kagawa
    • Journal Title

      Journal of Geometry and Physics

      Volume: 62, No. 9 Issue: 9 Pages: 1949-1976

    • DOI

      10.1016/j.geomphys.2012.04.004

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] Construction of a fundamental solution for parameter family of operators of Grushi type2015

    • Author(s)
      岩﨑千里
    • Organizer
      Workshop"Geometric and Singular Analysis"
    • Place of Presentation
      ポツダム(ドイツ)
    • Year and Date
      2015-02-09 – 2015-02-13
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Construction of a fundamental solution for degenerate operators of Grushi type2014

    • Author(s)
      岩﨑千里
    • Organizer
      Geometry in Nara
    • Place of Presentation
      奈良女子大学(奈良県奈良市)
    • Year and Date
      2014-08-19 – 2014-08-20
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Construction of a fundamental solution for parameter family of operators of Grushi type2014

    • Author(s)
      岩﨑千里
    • Organizer
      NCTS Workshop on Geometric and Singular Analysis
    • Place of Presentation
      新竹(台湾)
    • Year and Date
      2014-07-03 – 2014-07-04
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Construction of the fundamental solution for a Grushin type operator and its application2013

    • Author(s)
      C.Iwasaki
    • Organizer
      ISSAC 2013
    • Place of Presentation
      クラクフ(ポーランド)
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Green function of a Grushin Type Operator2013

    • Author(s)
      Chisato Iwasaki
    • Organizer
      NCTS International Conference on Geometric and Singular Analysis
    • Place of Presentation
      清華大学(台湾)
    • Related Report
      2012 Research-status Report
    • Invited
  • [Presentation] Construction of the Green function of the Grushin type operator and its application2013

    • Author(s)
      Chisato Iwasaki
    • Organizer
      Workshop Geometric and Singular Analysis
    • Place of Presentation
      ポツダム大学(ドイツ)
    • Related Report
      2012 Research-status Report
    • Invited
  • [Presentation] A representation of the fundamental solution and eigenfunction expansion to the Fokker-Planck operator2012

    • Author(s)
      Chisato Iwasaki
    • Organizer
      International Conference on Fourier Analysis and Pseudo-Differential Operators
    • Place of Presentation
      アアルト大学(フィンランド)
    • Related Report
      2012 Research-status Report
    • Invited
  • [Presentation] Green function of a Grushin Type Operator2012

    • Author(s)
      岩崎 千里
    • Organizer
      Seminar on Functional Analysis and Global Analysis
    • Place of Presentation
      東京理科大学(千葉県)
    • Related Report
      2012 Research-status Report
    • Invited
  • [Presentation] A representation of the fundamental solution and eigenfunction expansion to the Fokker-Planck operator

    • Author(s)
      C.Iwasaki
    • Organizer
      解析学コロキウム
    • Place of Presentation
      ミュンヘン大学(ミュンヘン,ドイツ)
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Construction of the fundamental solution for a Grushin type operator and its application

    • Author(s)
      C.Iwasaki
    • Organizer
      Sub-Riemann Geometry
    • Place of Presentation
      グライフスワルド(ドイツ)
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] 退化した放物型方程式に対する基本解の表示とnilmanifold上のspectral zeta function

    • Author(s)
      岩崎千里
    • Organizer
      数理解析研究所短期共同研究「微分方程式に対する幾何解析の展開」
    • Place of Presentation
      京都大学数理解析研究所(京都府)
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] 退化した放物型方程式に対する基本解の表象による表現とその応用

    • Author(s)
      岩崎千里
    • Organizer
      日本数学会2013年秋季総合分科会函数解析分科会特別講演
    • Place of Presentation
      愛媛大学(愛媛県)
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Construction of the fundamental solution for a Grushin type operator and its application to the Kohn-Laplacian

    • Author(s)
      C.Iwasaki
    • Organizer
      Seminar on Functional Analysis and Global Analysis 2013
    • Place of Presentation
      東京理科大学理工学部(野田市、千葉県)
    • Related Report
      2013 Research-status Report
    • Invited

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Published: 2013-05-31   Modified: 2019-07-29  

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