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Quasi-periodic solutions for the fourth order nonlinear Schr$\ddot{\mbox{o}}$dinger equation

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The Quenching Phenomena for Fourth-order Nonlinear Parabolic Equationos

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The Method of Lower and Upper Solutions for Fourth Order

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Multiplicity and concentration of solutions for fourth-order elliptic equations with mixed nonlinearity

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Boundary value problems for fourth order nonlinear $p$-Laplacian difference equations

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Existence of n Positive Solutions for Some Fourth-order Boundary Value Problems

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Fourth-order Modified Method For the Cauchy problem of the Modified Helmholtz Equation

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Numerical approximation for a fourth order ODE with nonlinear boundary conditions

一类具有非线性边界条件的四阶常微分方程的数值解法，任全伟，田红炯，本文给出了一类具有非线性边界条件的四阶常微分方程Bernoulli多项式估计.利用Green's函数讨论了方程解析解的存在性，然后提出

Existence of Positive Solutions of a Fourth-Order Three-Point

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Positive solution for a class of nonlinear fourth-order singular semipositone problem

一类非线性四阶奇异半正问题的正解，郝兆才，胡善宝，本文研究了一类奇异四阶半正微分方程组边值问题的正解存在问题。通过运用不动点定理,得到了正解的存在性。我们还给出了一个例子�

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Dependence of Eigenvalues on the Regular Fourth-Order Sturm$-$Liouville Problem

四阶正则S-L问题的特征值的依赖性，索建青，师志洁，Sturm-Liouville 问题的特征值不仅连续而且光滑依赖于该问题,本文给出了特征值关于给定系数：区间端点、边界条件、系数、和权函数的导�