一阶不连续混合型微分-积分方程周期边值问题解的存在性

Existence of Solutionsfor Periodic Boundary Value Problems of Mixed Type of Discontinous First-order Integro-differential Equations

利用了上下解方法讨论一阶不连续混合型微分 -积分方程周期边值问题解的存在性 ,改进和推广了已有的一些结果。

In this paper we study the existence of solutions for periodic bounday value problems of mixed type of discontinous first- order integro- differential equations by means of the upper and lower solutions.Some previous results are improved