数学物理学报 ›› 2003, Vol. 23 ›› Issue (2): 129-134.

• 论文 •    下一篇

一阶微分方程周期边值问题的解的存在性

 陈洁   

  1. 山东师范大学信息管理学院
    山东经济学院计算机信息管理系
  • 出版日期:2003-04-25 发布日期:2003-04-25

On the Existence of Solutions for PBVP of First Order Differential Equations

 CHEN Ji   

  • Online:2003-04-25 Published:2003-04-25

摘要:

该文用拓扑度理论证明了一阶微分方程周期边值问题关于下解与上解之间解的存在性的两个定理,这里下解α(t)与上解β(t)可以不满足关系α(0)≤α(2π),β(0)≥β(2π)

关键词: 周期边值问题;下解与上解;拓扑度

Abstract:

Using the topological degree theory, the author  proves several existence theorems of solutions between lower and upper solutions for periodic boundary value problems of first order differential equations, where the lower and upper solutions  \$α(t)\$ and  \$β(t)\$ need not satisfy relations \$α(0)≤α(2π),β(0)≥β(2π).\$

Key words: Periodic boundary value problems, Lower and upper solutions, Topological degree.

中图分类号: 

  • 34A34