李和黄在文[2]中提出了预条件矩阵I＋S＋R，当系数矩阵A为Z-矩阵时给出了预条件迭代法的收敛性结果．王和黄在文[1]中运用，1＋Sβα磷作为预条件矩阵，讨论了当系数矩阵A为肛矩阵时预条件Gauss-Seidel迭代法的收敛性．本文改进了文[1]中的有关结果．%preconditioned proved if the improve the co Li and Huang [2] gave the preconditioner 1＋ S ＋R and discussed the convergence of the iterative method for Z-matrices. Wang and huang [ 1 ] considered the precondi coefficient matrix A is an H-matrix,then （I＋Sβα）A is also an H-matrix. rresponding results in[ 1 ]. tioner ! ＋ Saβα and In this paper,we
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