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Propagation of singularities to dispertive equations of higher orders via the global theory of integral transformations

Research Project

Project/Area Number 18740073
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Basic analysis
Research InstitutionDoshisha University (2007-2008)
Osaka University (2006)

Principal Investigator

TAKUWA Hideki  Doshisha University, 理工学部, 准教授 (80403111)

Project Period (FY) 2006 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥2,180,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥180,000)
Fiscal Year 2008: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2007: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2006: ¥700,000 (Direct Cost: ¥700,000)
Keywords偏微分方程式論 / FBI変換 / 解の特異性伝播 / 複素幾何光学 / 逆問題 / 分散型方程式 / 解の特異性 / 複素幾何光学解 / 積分変換
Research Abstract

FBI変換と呼ばれる複素相関数をもつ積分変換を研究し、偏微分方程式の解の特異性伝播の一種である、解の平滑効果を検証した。特に、従来研究成果の少なかった高階分散型方程式を考察の中心に置いた。また、研究経過の中で新たに現れた問題である、FBI変換を用いた逆問題の考察も行った。
その結果、幾何学的散乱理論の枠組みで、高階分散型方程式の解の特異性について、遠方での初期値の減少度と解の解析性の関連を調べることができた。また、この枠組みでの分散型方程式と呼べる枠組みについて、一般的な考察をした。また、複素相関数に関する考察を行うことで、係数決定逆問題への応用を示すことができた。

Report

(4 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (13 results)

All 2008 2007 2006 Other

All Journal Article (9 results) (of which Peer Reviewed: 3 results) Presentation (4 results)

  • [Journal Article] Construction of a limiting Carleman weight2008

    • Author(s)
      H. Takuwa
    • Journal Title

      京都大学数理解析研究所考究録「Spectral and Scattering Theory and Related Topics」 no.1607

      Pages: 142-150

    • Related Report
      2008 Final Research Report
  • [Journal Article] Construction of a limiting Carleman weight2008

    • Author(s)
      H. Takuwa
    • Journal Title

      Seminar Notes of Mathematical Science 11 茨城大学

      Pages: 118-125

    • Related Report
      2008 Final Research Report
  • [Journal Article] Construction of a limiting Carleman weight2008

    • Author(s)
      H. Takuwa
    • Journal Title

      京都大学数理解析研究所考究録「Spectral and Scattering Theory and Related Topics」 1607

      Pages: 142-150

    • Related Report
      2008 Annual Research Report
  • [Journal Article] Construction of a limiting Carleman weight2008

    • Author(s)
      H. Takuwa
    • Journal Title

      Seminar Notes of Mathematical Science 11 11

      Pages: 118-125

    • Related Report
      2008 Annual Research Report
  • [Journal Article] Complex geometrical optics solutions for anisotropic equations and appli cations2008

    • Author(s)
      H. Takuwa, G. Uhlmann, and J.- N. Wang,
    • Journal Title

      J. Inv III- Posed Problems 16

      Pages: 791-804

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Singularities of parabolic equations and dispersive equations via the FBI transform2007

    • Author(s)
      H. Takuwa
    • Journal Title

      Seminar Notes of Mathematical Science 10 茨城大学

    • Related Report
      2008 Final Research Report
  • [Journal Article] Singularities of parabolic equations and dispersive equations via the FBI transform2007

    • Author(s)
      Hideki Takuwa
    • Journal Title

      Seminar Notes of Mathematical Sciences 10, Ibaraki University 10

      Pages: 157-164

    • Related Report
      2007 Annual Research Report
  • [Journal Article] Microlocal analytic smoothing effects for operators of real principal type2006

    • Author(s)
      H. Takuwa
    • Journal Title

      Osaka J. Math. 43 no.1

      Pages: 13-62

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Complex geometrical optics solutions for anisotropic equations and applications

    • Author(s)
      H. Takuwa, G. Uhlmann, and J.-N. Wang
    • Journal Title

      J. Inv. Ill-Posed Problems(に掲載決定済み,total 14p.)

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Presentation] Construction of a limiting Carleman weight2008

    • Author(s)
      多久和 英樹(Hideki Takuwa)
    • Organizer
      研究集会「スペクトル・散乱理論とその周辺Spectral and Scattering Theory and Related Topics」
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2008-01-17
    • Related Report
      2007 Annual Research Report
  • [Presentation] Construction of a limiting Carleman weight2008

    • Author(s)
      H. TAKUWA
    • Organizer
      京都大学数理解析研究所共同研究事業「スペクトル・散乱理論とその周辺-Spectral and Scattering Theory and Related Topics」
    • Place of Presentation
      京都大学
    • Related Report
      2008 Final Research Report
  • [Presentation] 「係数同定逆問題で使われるLimiting Carleman weightの構成について」2007

    • Author(s)
      多久和 英樹
    • Organizer
      研究集会「数理科学セミナー」
    • Place of Presentation
      同志社大学工学部
    • Year and Date
      2007-09-12
    • Related Report
      2007 Annual Research Report
  • [Presentation] 係数同定逆問題で使われるLimiting Carleman weightの構成について2007

    • Author(s)
      多久和英樹
    • Organizer
      数理科学セミナー
    • Place of Presentation
      同志社大学
    • Related Report
      2008 Final Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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