• 本文研究极限方程线性常微分方程柯西问题渐近

    This paper studies the asymptotic expression of solution of Cauchy's problem for a forth order equation when the limit equation has singularity.

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  • 本文主要运用锥不定理格林函数研究非线微分方程存在

    In this paper, we study the existence of positive solutions to second - order nonlinear ordinary differential equations by using fixed point theorem in cones and Green's function.

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  • 首次积分讨论了奇异边界条件非线微分方程存在、不存在唯一

    By the first integral method, the existence, uniqueness and nonexistence of solutions for some nonlinear ordinary differential equations with singular boundary condition are discussed.

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  • 受控系统运动设为系数线微分方程所描述,系统终点状态空间内的某一区域

    We assume that the motion of controlled object is describedby linear ordinary differential equations with variable coefficient, and the final states ofthe system form a convex region of phase space.

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  • 微分方程经典存在定理不能使用

    Often the existence axioms of classic in the differential calculus square distance can't use.

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  • 文中得到几个振动准则离散准则,这些结果应用微分方程

    Some oscillatory criteria and discrete spectrum criteria are given, and we can apply them to the ordinary differential equations.

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  • 标准奇异微分代数方程系统区别常微分方程系统一个标志的拓扑结构具有重要的理论研究意义。

    The standard singular point is an important structure of the differential-algebraic equation systems(DAEs), by which DAEs are differentiated from the ordinary different equation systems (ODEs).

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  • 应用常微分方程方法得到平衡点全局稳定振幅极限存在唯一的充分条件。

    By using the qualitative methods of ODE, the positive equilibrium's global stability and existence and uniqueness of non-small amplitude stable limit cycle were obtained.

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  • 孤立不变孤立块概念,给出了一个参数的二微分方程组的非驻定有界解分支存在准则。

    Using concepts of invariable set and isolated cube, we obtained existence for bifurcate points of bounded solutions of second order ordinary differential systems including a parameter.

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  • 利用MATLAB进行微分方程计算机辅助教学,探讨MATLAB进行一阶常微分方程辅助教学的可行方便

    The CAI teaching of a first-order ordinary differential equation is discussed with computer MATLAB software, and its feasibility and convenience is introduced.

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  • 研究一类非线四阶常微分方程两点边问题,得到一个存在唯一定理

    The uniqueness and existence theorem for a nonlinear fourth-order boundary value problem is established.

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  • 把所得结果应用于研究微分方程积分问题存在,所得结果推广和本质上改进马如云等作者最近的一些结果。

    Finally the main results are used to establish some existence results for positive solutions of integral boundary value problems for ordinary differential equations.

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  • 该文讨论由经典-脉冲混合控制最优策略提出一类常微分方程自由问题,给出了该问题解的存在定理。

    This paper discusses a class of free boundary value problem of ordinary differential equations occurred in problems of classical mixed and impulse optimum control in research fund management problems.

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  • 利用正交得到无限仅阻尼项耦合的关于时间的微分方程相应的初始条件

    Using the orthogonality of characteristic functions, a series of ordinary differential equations and their initial conditions are derived.

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  • 考虑具有介质阻尼及非线粘弹本构关系方程,证明了它的有界吸收有限维流形存在由此得到在一定的条件下所给偏微分方程等价于一常微分方程组的初值问题。

    The equations of nonlinear viscouselastic beam are considered, The existence of absorbing set and inertial manifolds for the system are obtained, and from which we get that the P D E.

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  • 考虑具有介质阻尼及非线粘弹本构关系方程,证明了它的有界吸收有限维流形存在由此得到在一定的条件下所给偏微分方程等价于一常微分方程组的初值问题。

    The equations of nonlinear viscouselastic beam are considered, The existence of absorbing set and inertial manifolds for the system are obtained, and from which we get that the P D E.

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