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本文研究下列n阶RFDE边值问题:x(n)(t)=f(t,xt,x(t),x′(t),…,x(n-1)(t)), t∈[0,T ],x(t)=φ(t),t∈[-r,0];x′(0)=η,x″(0)=η2,…,x(n-2) (0)=ηn-2,x(j)(T)=A,其中j∈I={0,1,2,…,n-1},得到了解的存在性和唯一性新的结果. 相似文献
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本文利用微分不等式原理及脉冲微分方程初值问题基本理论研究了n类n阶脉冲微 分方程边值问题,得到了该边值问题解的存在性及解的存在唯一性的新的结果. 相似文献
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In this paper, by using Mawhin's continuation theorem and some analysis methods,the existence of a set with 2kT-periodic solutions for a kind of prescribed mean curvature equation with a deviating argument is studied, and then a homoclinic solution is obtained as a limit of a certain subsequence of the above set. 相似文献
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We study the existence of homoclinic orbits for some Hamiltonian system.A homoclinic orbit is obtained as a limit of 2kT-periodic solutions of a sequence of systems of differential equations. 相似文献
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1 IntroductionIn recent years) there were many results of studying boundary value problemsfor functional differential equations [1-5]. But the boundary conditions are allDirichlet's type. In this paper, we will study a kind of boundary value problemswitb integro boundary condition fOr the functional differential equdtionswhere f(t, yt, x, y) is a continuous real function defined on the set fl = [0, T] xC. x R', and is continuously differentiable with respect to each variable x, y;p E C. = C… 相似文献
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一类中立型泛函微分系统周期解存在性问题 总被引:1,自引:0,他引:1
首先对线性差分算子M:[Mx](t)=z(t)-Cx(t-r)的性质进行了研究,在此基础上利用Mawhin重合度拓展定理研究了一类具偏差变元的中立型泛函微分系统的周期解问题,得到了周期解存在性的新结论.本文的矩阵C仅为一般的实方阵,不必为实对称阵,因而结果改进和推广了已有工作.此外,本文周期解先验界估计方法与已有工作也不相同. 相似文献