J4

• 数学 • 上一篇    下一篇

二阶奇异非线性微分方程周期边值问题解的存在性和多重性

高海音1,2, 李晓月2, 林晓宁2, 蒋达清2   

  1. 1. 长春大学 应用数学系, 长春 130022; 2. 东北师范大学 数学与统计学院, 长春 130024
  • 收稿日期:2004-11-08 修回日期:1900-01-01 出版日期:2005-07-26
  • 通讯作者: 高海音

Single and Multiple Positive Solutions of Periodic Boundary Value Problems for Second Order Singular Nonlinear Differential Equations

GAO Hai-yin1,2, LI Xiao-yue2, LIN Xiao-ning2, JIANG Da-qing2   

  1. 1. Department of Applied Mathematics, Changchun University, Changchun 130022, China;2. School of Mathematics and Static, Northeast Normal University, Changchun 130024, China
  • Received:2004-11-08 Revised:1900-01-01 Online:2005-07-26
  • Contact: GAO Hai-yin

摘要: 利用格林函数的正性和Krasnosel’skii不动点定理建立了二阶奇异非线性微分方程 周期边值问题解的存在性和多重性结果. 当非线性项f具有奇性且次线性时, 方程至少存在 一个正解; 当f具有奇性且超线性时, 方程至少存在两个正解, 从而推广和改进了已有文献的结果.

关键词: 阶奇异非线性微分方程, 周期边值问题, 正解的存在性

Abstract: In this paper we establish the existence of single and multiple positi ve solutions to the periodic boundary value problems of second order singular n onlinear differential equations by means of positivity of Green’s function and the Krasnosel’skii fixed point theorem in c ones. The problem has at least one positive solution when nonlinear term f i s singular and sublinear, and the problem has at least two positive solution s when f is singular and superlinear. The paper generalizes and improves the results in the literature.

Key words: singular second order nonlinear differential equation, periodic boundary value problem, existence of positive solution

中图分类号: 

  • O175.08