Existence of positive periodic solutions for a class of functional differential equations

被引:5
|
作者
Sun, Yan [1 ]
Han, Maoan
Debnath, Lokenath
机构
[1] Shanghai Normal Univ, Dept Math, Shanghai 200234, Peoples R China
[2] Univ Texas Pan American, Dept Math, Edinburg, TX 78539 USA
关键词
periodic solution; positive solutions; functional differential equation; existence;
D O I
10.1016/j.amc.2007.01.064
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
In this article, we investigate the existence of positive periodic solutions for a class of functional differential equations. By using fixed point index theory, we establish sufficient criteria that are easily verifiable and that generalize and improve related studies in the literature. Also, we give some examples in bio-mathematics to show that our main results are valid. (c) 2007 Published by Elsevier Inc.
引用
收藏
页码:699 / 704
页数:6
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