But this partial differential equation can not be directly integral, so usually use Navier method, Rayleigh Ritz method and finite difference method and other methods.
但这一偏微分方程不能直接积分，所以通常用纳维法、瑞利-里兹法、有限差分方法等方法求解。
Methods Build up differential equation under the circumstance of the market no arbitrage. Analyze and work out the solution of equation.
方法在市场无套利条件下建立随机微分方程，运用鞅论、随机分析的方法分析并求解方程。
It includes the following aspects:adopting the Partial Differential Equation and Neighborhood Average smoothing methods to reduce image noises.
采用图像相加、偏微分、邻域平均等方法来消除图像噪声；
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