periodic boundary problem meaning in Chinese

周期边界问题

Periodic boundary problems and initial problems for a class of generalized parabolic systems of higher order
一类高阶广义抛物型方程组的周期边值问题与初值问题
In this paper , the periodic boundary problems of impulsive differential systems are discussed . using fixed point theorems , sufficient conditions for existence of solutions of periodic boundary problems are obtained
摘要本文讨论了一阶脉冲微分系统的周期边值问题，利用不动点定理得到了问题的解存在的一些充分条件。