Let A and B be nonsingular M-matrices. Some new convergent sequences of the lower bounds of the minimum eigenvalue τ ( B ∘ A − 1 ) $au(Bcirc A^{-1})$ for the Hadamard product of B and A − 1 $A^{-1}$ are given. Numerical examples are given to show that these sequences are better than some known results and could reach the true value of the minimum eigenvalue in some cases.
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机译：令A和B为非奇异M矩阵。 B和A − 1 $ A ^ {-的Hadamard乘积的最小特征值τ（B∘A − 1）$ tau（B circ A ^ {-1}）$下界的一些新收敛序列。 1} $。数值算例表明，这些序列比某些已知结果更好，并且在某些情况下可以达到最小特征值的真实值。
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