In chapter three, we study the existence of solutions for a kind of forth order multiple-point boundary value problem. Combining lower and upper solutions methods and monotone iterative techniques, we get the minimal and maximal solutions.
在第三章,我们研究了四阶微分方程边值问题解的存在性,利用上下解结合单调迭代的方法给出了该边值问题的最大解和最小解。
参考来源 - 几类常微分方程多点边值问题解的存在性研究·2,447,543篇论文数据，部分数据来源于NoteExpress
We obtain the existence of extremal solutions of the boundary value problem by using the method of lower and upper solutions coupled with monotone iterative technique.
研究一类四阶微分方程解的存在性，利用上下解及单调迭代的方法，得出这类四阶方程的最大解和最小解的存在。
The existence theorem of a class of periodic boundary value problems for first order nonlinear integrodifferential equations is obtained through the method of lower and upper solutions.
研究了一类纯量形式非线性积分微分方程周期边值问题，利用上下解法证明了解的存在性。
In this paper, by using generalized R-KKM type theorems in topological Spaces, some existence theorems of solutions for equilibrium problem with lower and upper bounds are obtained.
应用拓扑空间中的广义r - KK M型定理，对拓扑空间中有上下界的平衡问题，证明了解的存在性定理。
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