fraction_lyapunov

主要用来进行Umat子程序指导编程说明用的文件(The document is mainly used for writting a Umat project by fortran language.)

常见的各类数值和字符算法，包括微积分、插值、矩阵、微分方程、方程组求解和字符串操作等，Fortran77版本，可直接用于各位自己的代码开发中(Most common algorithms, including numerical and char recipes, Fortran 77 version, can be used in your own program develpment directly)

将一些标准数值与非数值算法集中封装在几个DLL中,需要用时可在VB/Delphi/C#中分别调用,这里提供了3个小程序,分别用于线性方程组求根、计算行列式的值、矩阵求逆。(Some standard numerical and non-numerical algorithm focus on packaging in several DLL, it is necessary to use when in VB/Delphi/C# Call, respectively, this provides three small programs, respectively, for the roots of linear equations, calculation of the value of the determinant, matrix inversion.)

假设有一个能装入总体积为T的背包和n件体积分别为w1 , w2 , … , wn 的物品，能否从n件物品中挑选若干件恰好装满背包，即使w1 +w2 + … + wn=T，要求找出所有满足上述条件的解。例如：当T=10，各件物品的体积{1，8，4，3，5，2}时，可找到下列4组解：（1，4，3，2），（1，4，5），（8，2），（3，5，2）。 [需求分析](Suppose there are a load of the backpack of the total volume of T and n volumes were w1, w2, ... wn items, whether selected from n items a number of exactly filled backpack, even if w1+w2+ ...+ wn = T, find out the solution of all the above conditions are met. For example: when T = 10, the volume of items {1,8,4,3,5,2}, can be found in the following four solutions: (1,4,3,2), (1,4,5 ), (8,2), (3,5,2). [Needs Analysis])

一个用于学习GA的简单程序，自己编写的SGA，不是使用的工具箱函数(A simple GA for the learning process, I have written SGA, instead of using the toolbox function)

这是SIR微分方程模型对初值问题的求解和作图(This is the SIR model differential equations to solve the problem of initial value and mapping)

高斯消元法、高斯列主元消元法解线性方程组。程序由本人独立完全独立完成。版权所有！(Gaussian elimination method out PCA Gaussian elimination method for solving linear equations. I am independent program consists entirely independently. All rights reserved!)

用于求解二维欧拉流动方程的有限差分程序,基于NND法,求解精度较高.(Perfect fortran program by two dimensional NND finite difference method for Euler Equations on unstructured Grids, structured Grids and adaptive unstructured Grids. )

可控源音频大地电磁一维occam反演程序(Controlled source audio magnetotelluric inversion program of one-dimensional occam)

齿轮传动参数测定和公法线公差计算，变位直齿圆柱齿轮参数测定(Determination and the normal line of the gear transmission parameter tolerances calculation)