通过建立新的比较结果,在仅使用了下解或上解的条件下,利用单调迭代方法研究了Banach空间中二阶混合型积分-微分方程边值问题的最小解,最大解的存在性。
By using a new comparison result and only a lower or an upper solution, the maximal or the minimal solutions of the boundary value problems for second order integro-differential equations in Banach spaces were obtained.