EXISTENCE AND MULTIPLICITY OF POSITIVE PERIODIC SOLUTIONS FOR A CLASS OF SECOND ORDER DAMPED FUNCTIONAL DIFFERENTIAL EQUATIONS WITH MULTIPLE DELAYS

被引:0
|
作者
Liu, Ping [1 ]
Fan, Yonghong [1 ]
Wang, Linlin [1 ]
机构
[1] Ludong Univ, Sch Math & Stat Sci, Yantai 264025, Peoples R China
来源
关键词
Periodic solutions; Green's function; Krasnoselskii fixed point theorem;
D O I
10.11948/20190421
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
By using the Krasnoselskii fixed point theorem, sufficient conditions are obtained for the existence and multiplicity of positive periodic solutions for a class of second order damped functional differential equations with multiple delays. Our results are a further expansion of the previous research results.
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页码:798 / 809
页数:12
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