This paper is devoted to study the existence of an infinitude of periodic solutions for a class of second order linear PDE systems without damping.
本文首先给出了一类具有无穷多个周期解的无阻尼二阶线性偏微分方程所描述的系统。
From the result it shows that the proposed method precedes linear PDE whatever in keeping edge-based information, excursion of gray scale and the definition of pictures.
实验结果表明该方法无论从保护边缘信息、灰度偏移以及图像清晰度等视觉特性方面均优于线性偏微分方法。
Many mathematical models in the fields of physics, chemistry, biology and geology can be boiled down to the fixed solution problem of linear or nonlinear partial differential equations (PDE.)
物理、化学、生物、地质等领域的很多模型都可归结为线性或非线性偏微分方程的定解问题。
Generally, we choose some appropriate iteration methods to solve the large sparse matrix linear equation system to get the approximate solution of the PDE usually.
在求解大型线性方程组时，人们经常选用合适的迭代方法求其近似解。
Generally, we choose some appropriate iteration methods to solve the large sparse matrix linear equation system to get the approximate solution of the PDE usually.
在求解大型线性方程组时，人们经常选用合适的迭代方法求其近似解。
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