一个微分差分方程组数学模型周期正解的存在唯一性

On the Existence and Uniqueness of Positive Periodic Solution of a System of Differential——Difference Equations

本文考虑再生资源开发问题 ,建立了非线性微分差分方程组的数学模型 ,获得了该模型周期连续正解存在唯一的充分必要条件。

In this paper through studying a mathematical model of nonlinear system of differential——difference equations in developing recycle resources,we prove the existence and uniqueness of periodic solutions in model and obtain necessary and sufficient conditions of the existence and uniqueness of positive periodic solutions in the model.