Upper lower solutions method and monotone iterative technique are applied to initial value problem.
对于初值问题，采用上下解的单调迭代方法求解。
Methods The method of upper and lower solutions and the monotone iterative technique were used to establish our results.
方法 应用单调迭代技术结合上下解方法讨论最大解与最小解的存在性。
Cone theory and monotone iterative technique are used to discuss the existence for a kind of mixed monotone operators with pointwise sub-continuity.
利用锥理论和单调迭代技巧讨论了一类逐点次连续的混合单调算子不动点的存在性问题。
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