coding

可以进行平面拟合，基于matlab语言，简单易懂(It can be used for plane fitting. It is simple and easy to understand based on MATLAB language.)

the structure of the DG-FEM is very similar to that of the finite element method (FEM), there are several fundamental differences. In particular, the mass matrix is local rather than global and thus can be inverted at very little cost, yielding a semidiscrete scheme that is explicit. Furthermore, by carefully designing the numerical flux to reflect the underlying dynamics, one has more flexibility than in the classic FEM to ensure stability for wavedominated problems. Compared with the FVM, the DG-FEM overcomes the key limitation on achieving high-order accuracy on general grids by enabling this through the local element-based basis

FFT源代码 FFT源代码 FFT源代码(FFT source code FFT source code FFT source code)

21位水仙花数的寻找，里面用到了大数乘法等细节上的东西。(find the 21 digits narcissus.)

语音信号滤波程序（低通、带通、多带通、fft卷积滤波 自己动手做的(Voice signal filtering process (low-pass, band-pass, multi-band-pass, fft convolution filtering)

maple学习资料，以后学习maple就不用担心了(maple learning materials)

这是一段导线找形的命令流，可用于ansys有限元分析(This is a piece of wire to find the form of order flow, can be used for finite element analysis ansys)

数值分析中解线性方程组，最常用的四种迭代方法：雅克比、高斯赛德尔、SOR、共轭梯度，以及他们的比较(numerical analysis : jacobi S-G、SOR、cong)

光纤激光器速率方程 修改数值后可直接计算(The fiber lasers rate equation)

hankel矩阵生成函数介绍及函数代码。(Hankel matrix generating function introduction and function code.)