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一类具有多个偏差变元的高阶中立型微分方程的周期解
引用本文:黎勇,姚晓洁,秦发金.一类具有多个偏差变元的高阶中立型微分方程的周期解[J].数学的实践与认识,2012,42(1):178-187.
作者姓名:黎勇  姚晓洁  秦发金
作者单位:1. 百色学院数学与计算机信息工程系,广西百色,533000
2. 柳州师范高等专科学校数学与计算机科学系,广西柳州,545004
基金项目:国家自然科学基金(10671133);广西教育厅科研项目(201010LX501);广州大学-百色学院合作科研项目(GBK2010003)
摘    要:利用Mawhin重合度理论,获得了一类具有多个偏差变元的高阶中立型微分方程(x(t)-cx(t-r))~(l)+h(x(t))x′(t)+■α~i(t)f(x′(t-μ_i(t))+■β_j(t)g(x(t-τ_i(t)))=p(t)周期解存在性的新结果,推广和改进了已有文献的相关结果.

关 键 词:偏差变元  高阶微分方程  周期解  重合度理论

Periodic Solution of a Kind of High-order Differential Equation with a Deviating Argument
LI Yong , YAO Xiao-jie , QIN Fa-jin.Periodic Solution of a Kind of High-order Differential Equation with a Deviating Argument[J].Mathematics in Practice and Theory,2012,42(1):178-187.
Authors:LI Yong  YAO Xiao-jie  QIN Fa-jin
Institution:1.Department of Mathematics and Computer Science,Baise University,Baise 533000) (2.Department of Mathematics and Computer Science,Liuzhou Teachers College,Liuzhou 545004,China)
Abstract:By using the coincidence degree,some new results of the existence of positive periodic solution is obtained for a kind of high-order differential equation with a deviating argument as follows: (x(t) - cx(t - r))(l)+ h(x(t))x’(t) + sum from i=1 to mαi(t)f(x’(t -μi(t))) + sum from j=1 to nβj(t)g(x(t-τj(t))) = p(t) The results have extended and improved the related reports in the literatures.
Keywords:deviating argument  high-order differential equation  periodic solution  coincidence degree
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