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弱双曲型偏微分方程式及び系の解の構造

Research Project

Project/Area Number 62540109
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 解析学
Research InstitutionKyoto University

Principal Investigator

大矢 勇次郎  京都大学, 工学部, 教授 (70025922)

Co-Investigator(Kenkyū-buntansha) 多羅間 茂雄  京都大学, 工学部, 助手 (90115882)
松村 昭孝  京都大学, 工学部, 講師 (60115938)
Project Period (FY) 1987
Project Status Completed (Fiscal Year 1987)
Budget Amount *help
¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1987: ¥600,000 (Direct Cost: ¥600,000)
Keywords双曲型作用系 / Gevrey級関数 / 初期値問題
Research Abstract

〔O.T〕×IR^lで定義された Konalewski型作用系 P(t,x;Dt,Dx)=D^m_t+Σajv(t,x)D^0_tD^r_xに対する初期値問題
を考えよう
tにつきK-Holder連続(OSY(less than or equal)Q)、各t∈〔O,T〕についてγ^s_<loc>(IR^e):局所的に指数SのGevrey級関数に値をとる関数空間をC^K(〔O,T〕;γ^s_<loc>(IR^e))と定義する 仮定:1つ Pの特性方程式の根は実数、最大重複度をγ((greater than or equal)Q)とする 2)主要部の係数は C^<K(〔O,T〕;γ^s_<loc>(IR^<e>))、何階の係数とf(t,x)はC°(〔O,T〕;γ^s_<loc>(IR^<e>))、初期化 ψj(x)はγ^s(IRe>)に属する。
定理1
Sが1<s<min(1+K/r, r/(r-1))を満すならば(E)の解は C^m(〔O,T〕;γ^s_<loc>(IR^e))に一意的に存在し, その解は, 有限な伝播測度をもつ.
特に1)の重複度一定を仮定すれば1<s<min(1+k, r/(r-1))に対して, 結論は正しい.
定理2
定理1の後半のSに対する条件は必要でもある.
(説明)r=2の時に常微分方程式の議論を効果的に用いる. 即ちAiry関数の漸近的挙動が中心である.

Report

(1 results)
  • 1987 Annual Research Report
  • Research Products

    (5 results)

All Other

All Publications (5 results)

  • [Publications] Y. Ohya: Nonlinear partical differential equations and their applications:College de France Seminar, Vol. III. (H. Brezis & J. L. Lions), Pitman Res. Notes in Math. Series.70. 268-290 (1982)

    • Related Report
      1987 Annual Research Report
  • [Publications] Y. Ohya: Seminaire sur les equations aux derivees partielles hyperboliques et holomorphes(J. Vaillant), Hermann, Paris.166-182 (1984)

    • Related Report
      1987 Annual Research Report
  • [Publications] Y. Ohya et S. Tarama: Hyperbolic Equations & Related Topics, Proc. Taniguchi Internat. Symp.(1984). Kinokuniya & Academic Press.273-306 (1986)

    • Related Report
      1987 Annual Research Report
  • [Publications] Y. Ohya et S. Tarama: Hyperbolic Equations, Proc. Internat. Symp. Padova in Italy(F. Colombini & M. K. V. Murthy)1985, Pitman Res. Notes in Math Series,. 158. 115-129 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] Yuziro OHYA: "Le Probleme de Cauchy a Caracteristiques Multiples." Universite Pierre et Marie Curie(J. Vaillant)Cours professe 1979-80., 121 (1980)

    • Related Report
      1987 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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