数学物理学报 ›› 2000, Vol. 20 ›› Issue (3): 414-418.

• 论文 • 上一篇    下一篇

方程Δu+g(|X|)f(u)=0的环上Dirichlet边值问题的正对径解的存在性

  

  1. (西北师范大学数学系 甘肃兰州 730070)
  • 出版日期:2000-05-12 发布日期:2000-05-12

Existence of Positive Radial Solutions of Dirichlet Problems for Elliptic Equations Δu+g(|X|)f(u)=0 in Annulus

  1. (Department of Mathematics, Northwest Normal University, Lanzhou 730070, China)
  • Online:2000-05-12 Published:2000-05-12

摘要:

研究了二阶椭圆方程Δu+g(|X|)f(u)=0在环域上关于Dirichlet边界条件的正对径解的存在性. 文中不要求liml→0f(l)/l, liml→∞f(l)/l存在. 文的工作推广了文[7]、[9]中的结论.

关键词: 二阶椭圆方程, Dirichlet边值问题, 正对径解

Abstract:

We study the existence of positive radial solutions of elliptic equations Δu+\{g(|X|)f(u)\}=0 in annular domains, subject to Dirichlet boundary conditions. In this paper it is no required that liml→0f(l)/l,liml→∞f(l)/l exist. Our worke is a develop to Coffman [7] and Wang Haiyan [9].

 

Key words: Secondorderellipticequation, Dirichletboundaryvalueproblem, Positiveradialsolution

中图分类号: 

  • 35J20,34B15