摘要
M-矩阵在数学物理、控制论、电力系统理论等领域有广泛的应用。M-矩阵的Fan积是矩阵分析理论研究中的重要问题。在H9lder不等式的基础上,利用相似矩阵具有相同特征值这一特点给出2个n阶M-矩阵A和B的Fan积AB的最小特征值下界。所得结果只依赖于2个M-矩阵的元素,便于计算。数值算例表明,新估计式在一定条件下改进了现有的一些结果。
M-matrices are applied widely in mathematical physics,cybernetics,electric system and so on.The Fan product of Mmatrices is an important problem in the matrices analysis theories.Based on the H9 lder inequality,lower bounds on the minimum eigenvalue for the Fan product of M-matrices Aand Bare given,since the similar matrices have same eigenvalues.The new bounds only depend on the entries of M-matrices.Therefore,they are easy to calculate.Numerical examples showed that the new bounds improved several existing results.
引文
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