OFELI is an object oriented library of C++ classes for development of finite element codes. Its main features are : * Various storage schemes of matrices (dense, sparse, skyline). * Direct methods of solution of linear systems of equations as well as

矩阵（Matrix）是一个数学概念，它具有以下行为： （1） 两个矩阵相加 （2） 两个矩阵相乘 （3） 一个矩阵转置 用面向对象编程思想实现-Matrix (Matrix) is a mathematical concept, it has the following acts: (1) the sum of two matrices (2) the two matrices (3) a matrix transpose thinking with the realizatio