...混合边值问题；上下解方法； 上下解 上下解方法是讨论常微分方程边值问题可解性的一类基本方法． 近年来， 随着各类边值 问题的深入研究，上下解方法作为一种有效手段得到了广泛应[gap=6096]Keywords: mixed data boundary value problem; the method of upper and lower solutions; upper and lower solutions ..
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...程组;混合边值问题;不动点定理;正解 [gap=453]Keywords】: systems of differential equations; mixed boundary value problems; fixed point theorems; positive solutions ..
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Consider the following mixed boundary value problem for the Helmholtz equationWhere k>0is wave,the constantσ＞0 is boundary impedance coefficient.
考虑以下混合边值问题:其中k＞0是波数,常数σ＞0是边界阻抗系数,υ是相应边界的外法向导数。
参考来源 - 环形区域上Helmholtz方程混合边值问题的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
关于第四类非混合边值问题的讨论，待续。
As for the fourth non - mixed boundary value problems, they will be delivered later.
本文提出了利用变分法解混合边值问题直接计算位系数的原理。
A variational principle is presented in this paper for directly calculating the potential coefficients in solving the mixed boundary value problem.
研究了一类带有非线性迁移率的漂移-扩散模型的混合边值问题。
In this paper we consider the following drift-diffusion model with nonlinear mobility.
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