共查询到20条相似文献,搜索用时 15 毫秒
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《数学物理学报(B辑英文版)》2017,(6)
By use of Nevanlinna value distribution theory,we will investigate the properties of meromorphic solutions of two types of systems of composite functional equations and obtain some results. One of the results we get is about both components of meromorphic solutions on the system of composite functional equations satisfying Riccati differential equation,the other one is property of meromorphic solutions of the other system of composite functional equations while restricting the growth. 相似文献
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高阶拟线性中立型偏泛函微分方程组解的振动性 总被引:33,自引:0,他引:33
林文贤 《高等学校计算数学学报》2003,25(1):50-59
1 引言 由于在人口动力学、生物遗传工程和化学反应过程等自然的和人为的过程中都存在滞后现象,因而偏泛函微分方程(组)的研究能更精确地揭示事物本质,同时能丰富微分方程(组)理论的研究。近十几年来,很多学者在泛函偏微分方程解的振动理论的研究方面作了大量工作,取得了许多成果。然而,关于泛函偏微分方程组解的振动性的研 相似文献
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OSCILLATION OF THE SOLUTIONS OF NONLINEAR HYPERBOLIC PARTIAL DIFFERENTIAL EQUATIONS OF NEUTRAL TYPE 总被引:2,自引:0,他引:2
This paper, deals with the oscillatory properties of a class of hyperbolic functional differential equations and obtains a set of criterions, by using some results of functional differential inequality. These results reveal that the varied difference between hyperbolic functional differential equations and hyperbolic differential equations. 相似文献
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OSCILLATION FOR SOLUTIONS OF SYSTEMS OF N-TH ORDER PARTIAL FUNCTIONAL DIFFERENTIAL EQUATIONS 总被引:5,自引:0,他引:5
林文贤 《Annals of Differential Equations》2004,20(3):266-272
In this paper, some sufficient conditions for the oscillation for solutions to systems of n-th order partial functional differential equations are obtained. 相似文献
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NECESSARYANDSUFFICIENTCONDITIONSFOREXISTENCEANDUNIQUENESSOFPERIODICSOLUTIONSOFNEUTRALLINEARFUNCTIONALDIFFERENTIALEQUATIONSWIT... 相似文献
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高凌云 《数学物理学报(B辑英文版)》2010,30(3):932-938
We investigate the problem of growth order of solutions of a type of systems of non-linear algebraic differential equations, and extend some results of the growth order of solutions of algebraic differential equations to systems of algebraic differential equations. 相似文献
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Wu Jianhong 《数学年刊B辑(英文版)》1988,9(2):227-238
With the help of a Liapunov functional with seml-negative definite derivative,Barbashin-Krasovskii's theorem is extended to nonautonomous functional differentialequations,a reducing dimension approach is presented for the uniform asymptotic stabilityof high dimension systems,and some sufficient conditions of uniform asymptotic stabilityare obtained. 相似文献
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本文研究了多复变中一类复高阶偏微分方程组的允许解的存在性问题,利用多复变值分布理论和技巧,获得一类复高阶偏微分方程组在给定条件下,其允许解的性质.并将单复微分方程组中的一些结果推广到多复变中. 相似文献
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高阶偏泛函微分方程系统解的强迫振动性 总被引:6,自引:0,他引:6
本文研究两类高阶偏泛函微分方程系统的强迫振动性,利用微分不等式和积分技巧,获得了这两类系统解的强迫振动的若干充分判据,所得结果推广和包含了文[1]的相应结果. 相似文献
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1 IntroductionConsider the following functional differential equationX'(t) = A(t)x(t) [' C(t,s)x(s)ds, (1)icwhere x E m; A(t) = (ail(t))... is a n x n function matrix, which continuesin [0, co); C(t,s) = (qj(t,8))... is a n x n function matrix, which conti-nues when 0 5 s 5 t < co, and L oo IIC(u,t)lldu continues in [0, co).The problem on the stability for the zero solution of (1) has been studied bymany papers. But in the known results, the boundedness of j: IIC(t, s)lldsor L " IIC… 相似文献
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高阶非线性中立型方程正解的渐近性及存在性 总被引:2,自引:0,他引:2
本文利用非线性分析中半序方法和增算子不动点定理,对高阶非线性中立型方程正解的渐近性进行了详细分类,并且给出了各种类型正解存在的充要条件和具体例子. 相似文献
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非线性中立抛物型偏微分方程系统的振动性定理 总被引:1,自引:0,他引:1
罗李平 《数学的实践与认识》2009,39(6)
研究一类非线性中立抛物型时滞偏微分方程系统解的振动性质,利用积分不等式和泛函微分方程的某些结果,获得了该类系统在第一类边值条件下所有解振动的若干充分条件.结论充分表明振动是由时滞量引起的. 相似文献
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N Luca 《Journal of Mathematical Analysis and Applications》1979,67(2):323-339
Various stability types, analogous to those in the theory of ordinary differential equations, are defined for some classes of integrodifferential systems of equations with infinite delays. Then, on the basis of a variation of constants formula and some results in functional analysis and Laplace transform theory, some necessary conditions and necessary and sufficient conditions are established in order that the trivial solution of a class of systems may be classified as one of the stability types considered in the definitions. 相似文献
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This paper deals with fishing models with stage structure and harvest in an inshore-offshore area. By using the monotonic theory and concave operators to functional differential equations and the qualitative theory of differential equations, steady states of this dynamical systems representing fishery are derived, and their globally attracting behaviors are discussed. A brief biological meaning for the mathematical results is given. 相似文献
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This paper is concerned with the numerical dissipativity of nonlinear Volterra functional differential equations (VFDEs). We give some dissipativity results of Runge-Kutta methods when they are applied to VFDEs. These results provide unified theoretical foundation for the numerical dissipativity analysis of systems in ordinary differential equations (ODEs), delay differential equations (DDEs), integro-differential equations (IDEs), Volterra delay integro-differential equations (VDIDEs) and VFDEs of other type which appear in practice. Numerical examples are given to confirm our theoretical results. 相似文献
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The purpose of this paper is to study the existence problems of solutions for some classes of functional equations and systems of functional equations arising in multistage allocation processes. 相似文献