Employing the so called variational Liapunovmethod, 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。
2
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。
3
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.