数学物理学报 ›› 2004, Vol. 24 ›› Issue (2): 144-151.

• 论文 • 上一篇    下一篇

二阶椭圆型微分方程解的振动定理

 徐志庭, 马东魁, 贾保国   

  1. 华南师范大学数学系 广州 510631 华南理工大学应用数学系 广州 510641 中山大学数计学院科计系 广州 510275
  • 出版日期:2004-04-27 发布日期:2004-04-27

Oscillation Theorems for Elliptic Equations of Second Order

 XU Zhi-Ting, MA Dong-Kui, GU Bao-Guo   

  • Online:2004-04-27 Published:2004-04-27

摘要:

考虑二阶非线性椭圆型微分方程∑^n_{i,j}∂/∂x_i{A_{i,j}(x,y)∂/∂x_j}+q(x)f(y)=0  (E),其中q(x)在外区域 Ω∈R\+n上变号. 利用偏Riccati变换和积分平均技巧, 建立了方程(E)所有解振动的充分准则.

关键词: 振动;二阶椭圆型微分方程;积分平均;偏Riccati变 换

Abstract:

Consider the second order elliptic  equations ∑^n_{i,j}∂/∂x_i{A_{i,j}(x,y)∂/∂x_j}+q(x)f(y)=0  (E),Some oscillation criteria are obtained for Eq.(E) in an exterior domain Ω R^n (n≥2), where q(x) is allowed to change sign.Generalized partial Riccati transformation and averaging technique are employed to establish our results.

Key words: Oscillation, Elliptic , equations of second order, Averaging technique, Generalized partial Riccati transformation

中图分类号: 

  • 35J60