矩阵全部特征值的QR方法，包括化一般矩阵为上Hessenberg阵，平面旋转阵(Givens变换阵)，用 Givens变换对上Hessenberg阵作QR分解，原点平移加速的QR方法等-Eigenvalue matrix of all the QR methods, including the general of the Hessenberg matrix array, planar array rotation (Givens transformation matrix), with the