Strassn关于两个矩阵相乘的算法，同过分治原理把两个n*n的矩阵阶各分解成四个n/2*n/2阶的矩阵，当分解出来的矩阵阶数等于2时，求借各个小矩阵，若阶数大与2，就递归的调用前面方法，直到分解成2*2的子矩阵为止。-Strassn on two matrix multiplication, the algorithm, with the governing principle over two n* n matrix of the band decomposed into 4 n/2* n/2 bands matrix, the matrix decomposition order to 2:00, seek through various small matrix, if several big bands and two on the recursive call ahead, until decomposed into two sub-2* Matrix far.