数学物理学报 ›› 2000, Vol. 20 ›› Issue (2): 269-273.

• 论文 • 上一篇    下一篇

一阶线性时滞微分不等式

  

  1. (中南工业大学应用数学系 长沙 410083)
                                                     |(湖南大学应用数学系 长沙 410082)
  • 出版日期:2000-03-03 发布日期:2000-03-03

First Order Linear Differential Inequlities

  1. (Department of Applied Mathematics, Central South University of Technology, Changsha, 410083)
    (Department of Applied Mathematics, Hunan University, Changsha, 410082)
     
  • Online:2000-03-03 Published:2000-03-03

摘要:

研究了一阶线性时滞微分不等式

x(t) + p(t)x(τ(t)) 0

正解的不存在性, 其中p(t), τ(t)C(t0,), 0,)),τ(t)t, 所获充分条件改进了许多熟知的结论.

关键词: 时滞, 微分不等式, 最终正解

Abstract:

 In this paper, the nonexistence of eventually positive solutions of the first order linear delay differential inequality
     x′(t) + p(t)x(τ(t)) ≤ 0
is investigated, where p(t), τ(t)∈C([t0,∞),[0,∞)),τ(t)≤t. The obtained sufficient conditions improve many known results in the literature.

Key words: Delay, Differentialinequality, Eventuallypositivesolution

中图分类号: 

  • 34K15,34C10