Solutions for a class of third order nonlinear differential equations are studied by using the Leray Schauder fixed point theorem and the method of Liapunov function.
运用Leray - Schauder不动点定理和Luapunov函数，研究了一类三阶非线性微分方程概周期解的存在性。
Proves the stableness of this method with Liapunov Theory.
应用李亚普诺夫理论证明了该方法的稳定性。
The conditions of Theorems 1 and 2 formulated here adopt the Liapunov functions with parameter so that they may be more easily obtained by using Chetaev 's method.
其中定理1和2的条件采用带参数的函数，便于运用由方程首次积分构造函数的方法来获得。
Conditions for permanence is established via the method of comparison involving multiple Liapunov functions.
进而，利用李雅普·诺夫函数和比较定理确定了持续生存的条件。
Employing the so called variational Liapunov method, this article discussed the stability properties of delay difference systems in terms of two measures.
运用变异李亚谱诺夫方法，讨论了时滞差分系统依照两种测度的稳定性。
Employing the so called variational Liapunov method, this article discussed the stability properties of delay difference systems in terms of two measures.
运用变异李亚谱诺夫方法，讨论了时滞差分系统依照两种测度的稳定性。
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