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Study of first-order hyperbolic equations with discontinuous coefficients using Colombeau's theory

Research Project

Project/Area Number 19740067
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Basic analysis
Research InstitutionUniversity of Toyama

Principal Investigator

DEGUCHI Hideo  University of Toyama, 大学院理工学研究部(理学), 講師 (30432115)

Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥1,940,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥240,000)
Fiscal Year 2008: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2007: ¥900,000 (Direct Cost: ¥900,000)
Keywords一階双曲型方程式 / 一般関数解 / 正則性 / 特異性の伝播 / 一意性 / 一階線形双曲型方程式
Research Abstract

不連続な係数を持つ一階線形双曲型方程式に対する初期値問題のColombeauの意味での一般関数解を研究した。このような初期値問題は、一般に一意な超関数解を持たないが、一意な一般関数解を持つ。この一見、不可思議な現象の解明を試みた。次に、一般関数解の正則性、特異性の伝播を研究した。特に、ある不連続な係数の場合において、初期値の原点における特異性がどのように伝播するかを詳しく考察した。さらに、一般関数解が超関数の情報のレベルでどのように振舞うかを調べた。

Report

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

    (3 results)

All 2009 2008

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (2 results)

  • [Journal Article] Existence, uniqueness and stability of weak solutions of parabolic systems with discontinuous nonlinearities2009

    • Author(s)
      Hideo Deguchi
    • Journal Title

      Monatshefte fur Mathematik 156

      Pages: 211-231

    • Related Report
      2008 Annual Research Report 2008 Final Research Report
    • Peer Reviewed
  • [Presentation] Weak solutions of a parabolic system with a discontinuous nonlinearity2008

    • Author(s)
      Hideo Deguchi
    • Organizer
      The 5th World Congress of Nonlinear Analysts WCNA-2008
    • Place of Presentation
      Hyatt Grand Cypress Resort, Orlando, Florida USA
    • Year and Date
      2008-07-07
    • Related Report
      2008 Final Research Report
  • [Presentation] Weak solutions of a parabolic system with a discontinuous nonlinearity2008

    • Author(s)
      Hideo Deguchi
    • Organizer
      The 5th World Congress of Nonlinear Analysts
    • Place of Presentation
      オーランド(アメリカ合衆国)
    • Year and Date
      2008-07-07
    • Related Report
      2008 Annual Research Report

URL: 

Published: 2007-04-01   Modified: 2016-04-21  

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