说明：  本教程致力于讨论数值线性代数中使用的计算方法。讨论的主题包括矩阵乘法、矩阵变换、求解线性方程组的数值方法、线性最小二乘法、正交性、奇异值分解、矩阵特征值问题和稀疏矩阵计算。
(This tutorial is devoted to discussion of the computational methods used in numerical linear algebra. Topics discussed include, matrix multiplication, matrix transformations, numerical methods for solving systems of linear equations, the linear least squares, orthogonality, singular value decomposition, the matrix eigenvalue problem, and computations with sparse matrices.)