邱本花,姚青華
(鄭州科技學(xué)院基礎(chǔ)部,河南鄭州 450064)
具偏差變元Rayleigh型p-Laplacian中立型微分方程周期解的存在性
邱本花,姚青華
(鄭州科技學(xué)院基礎(chǔ)部,河南鄭州 450064)
利用Mawhin連續(xù)定理和一些分析方法,證明了p-Laplacian中立型微分方程(φp(x(t)-cx(t-σ))')'=f(t,x'(t))+g(t,x(t-τ(t)))-e(t)周期解的存在性.
周期解;Rayleigh中立型微分方程;p-Laplacian算子;偏差變元
在過去幾年里,關(guān)于時(shí)滯微分方程周期解的存在性已經(jīng)受到廣泛的關(guān)注[1-6],如文獻(xiàn)[3]研究了一個具有二階時(shí)滯的微分方程
很少有文章討論具偏差變元Rayleigh型的方程.文獻(xiàn)[5]研究了下面的一個具有Rayleigh型的偏差變元方程
而且,通過利用Mawhin連續(xù)定理得到了方程(2)的周期解存在性的充分條件.
本文討論了一個具有偏差變元Rayleigh型p-Laplacian中立型微分方程周期解的存在性.該方程為
首先定義以下幾個概念.
下面介紹本文的重要理論基礎(chǔ):重合度拓展定理.
[1] CHEUNG W S,REN Jingli.On the existence of periodic solutions for p-Laplacian generalized Lienard equation[J].Nonlinear Anal TAM,2005,60(1):65-75.
[2] CHEUNG W S,REN Jingli.Periodic solutions for p-Laplacian differential equation with multiple deviating arguments[J].Nonlinear Anal TAM,2005,62(4):727-742.
[3] LU Shiping,GE Weigao.Periodic solutions for a kind of Lienard equation with a deviating argument[J].J Math Anal Appl,2004,289(1):231-243.
[4] LU Shiping,GE Weigao.Existence of periodic solutions for a kind of second-order neutral functional differential equation[J].Appl Math Comput,2004,157(2):433-448.
[5] DEL PINO M A,ELGUETA M,Manasevich R F.A homotopic deformation along p of a Leary-Schauder degree result and existence for')'+f(t,u)=0,u(0)=u(T)=0,p>1[J].J Differential Equations,1989,80(1):1-13.
[6] GAINES R E,MAWHIN J L.Coincidence Degree and Nonlinear Differential Equation[M].Berlin:Springer,1977.
Existence of Periodic Solution for Rayleigh Type p-Laplacian Neutral Function Differential Equation with Deviation Arguments
QIU Ben-hua,YAO Qing-hua
(Department of Basic Courses,Zhengzhou College of Science and Technology,Zhengzhou450064,China)
Using Mawhin's continuation theory and some analysis methods,the existence of periodic solutions of the p-Laplacian neutral function differential equation,(φp(x'(t)-c×(t-σ))')'=f(x'(t))+g(t,x(t-τ(t))) =e(t),is proved.
periodic solution;Rayleigh neutr function differential equation;p-Laplacian operator;deviating argument
O175.1
A
1007-0834(2011)04-0015-05
10.3969/j.issn.1007-0834.2011.04.006
2011-08-13
河南省基礎(chǔ)與前沿技術(shù)研究計(jì)劃資助項(xiàng)目(082300410070)
邱本花(1982—),女,河南信陽人,鄭州科技學(xué)院基礎(chǔ)部教師.