quasi upper and lower solutions 拟上下解
strict upper and lower solutions 严格上下解
coupled upper and lower solutions 耦合上下解
upper and lower solutions approach 上下解理论
upper and lower solutions principle 上下解原理
generalized upper and lower solutions 一般化的上下解
coupled lower and upper solutions 耦合下上解
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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。
Studies the existence for two-point boundary value problems of two fourth-order nonlinear equations by using the theories of upper and lower solutions.
利用上下解理论研究了两类四阶非线性方程两点边值问题解的存在性。
In this paper we discussed the existence and uniqueness theorems for third-order boundary value problems, using the method of upper and lower solutions.
本文利用上、下解方法证明了两类三阶边值问题解的存在性和唯一性。
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