李艳艳, 李耀堂. 矩阵Hadamard积和Fan积的特征值界的估计[J]. 云南大学学报(自然科学版), 2010, 32(2): 125-129 .
引用本文: 李艳艳, 李耀堂. 矩阵Hadamard积和Fan积的特征值界的估计[J]. 云南大学学报(自然科学版), 2010, 32(2): 125-129 .
LI Yan-yan, LI Yao-tang. Bounds on eigenvalues of the Hadamard product and the Fan product of matrices[J]. Journal of Yunnan University: Natural Sciences Edition, 2010, 32(2): 125-129 .
Citation: LI Yan-yan, LI Yao-tang. Bounds on eigenvalues of the Hadamard product and the Fan product of matrices[J]. Journal of Yunnan University: Natural Sciences Edition, 2010, 32(2): 125-129 .

矩阵Hadamard积和Fan积的特征值界的估计

Bounds on eigenvalues of the Hadamard product and the Fan product of matrices

  • 摘要: 给出非负矩阵A与B的Hadamard积A °B的谱半径上界的一个新估计式和非奇异M-矩阵A和B的Fan积A*B的最小特征值下界的一个新估计式,这2估计式只依赖于矩阵A与B的元素,易于计算.例证表明,所得估计式在一定条件下比现有估计式更为精确.

     

    Abstract: A new upper bound of the spectral radius of Hadamard product for nonnegative matrices,and a new lower bound of the minimum eigenvalue of Fan product for nonsingular M-matrices,are given.The estimating formulas of the bounds are easier to calculate since they only depend on the entries of matrices Aand B.The given numerical examples show that estimating formulas of the bounds are better than several known estimating formulas.

     

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