数学物理学报 ›› 2000, Vol. 20 ›› Issue (2): 261-268.

• 论文 • 上一篇    下一篇

二维空间中半线性波动方程渐近理论的一个新结果

  

  1. (四川师范大学数学系 成都 610066)
  • 出版日期:2000-03-03 发布日期:2000-03-03

A New Result of Asymptotic Theory for Semilinear Wave Equations in Two Space Dimensions

  1. (Department of Mathematics, Sichuan Normal University, 610065)

  • Online:2000-03-03 Published:2000-03-03

摘要:

研究二维空间中一类半线性波动方程初值问题解的渐近理论,在
C2(J×R2)(J={t|0≤t≤O(|ε|-1/(2-k(p-1))),ε→0,0<2-k(p-1)<1,0
空间中讨论了其形式近似解的合理性,即形式近似解存在的时间阶函数为T=0(|ε|-1/(2-k(p-1))),和[1][2][3][4]中的结果比较,本文的时间阶函数在刻划对解的存在时间和渐近解的存在时间上较长一些.

关键词: 半线性波动方程, 二维空间, 渐近理论, 应用

Abstract:

 The asymptotic theory for a class of semilinear wave equations in two space demensions is established in this paper. The validity of formal approximations on a long time scale of order
C2(J×R2)(J={t|0≤t≤O(|ε|-1/(2-k(p-1))),ε→0,0<2-k(p-1)<1,0
is discussed in the classical sense of C2. The time order function obtained in this paper is better than that of [1]~[4].

Key words: Semilinearwaveequations, Twospacedimensions, Asymptotictheory, Application.

中图分类号: 

  • 62A15,68T30