带'上确界'的一阶脉冲微分方程的周期边值问题

摘要

The periodic boundary value problems for first order nonlinear impulsive differential equations with "su-premum" are studied by means of the upper and lower solutions method and the monotone iterative technique, and the existence results for their extremal solutions are obtained.%利用上下解方法和单调迭代技术,研究了带"上确界"的一阶脉冲微分方程的周期边值问题,并且获得了其极值解存在性结果.