给出M-矩阵与其逆矩阵的Hadamard积的最小特征值下界新的估计式,改进了已有的相关结果.这些估计式都只依赖于矩阵的元素,易于计算.
Some new lower bounds of the minimum eigenvalue of the Hadamard product of a M-matrix and its inverse are given. These bounds have improved the results of related studies. The estimating formulas of the bounds only depend on the entries of matrices; therefore,they are easy to calculate.