共查询到17条相似文献,搜索用时 78 毫秒
1.
本文把矩阵广义 Schur补和复合矩阵结合起来,研究了一个m×n复矩阵的广义Schur补及其共轭转置之积的复合矩阵的Lwner偏序,并给出相关复合矩阵的奇异值不等式;推广了近期的一些结果. 相似文献
2.
首先得到了半正定 Hermitian矩阵的方幂的广义 Schur补的 L owner偏序的一些结果 ,然后改进了半正定 Hermitian矩阵的 Schur补的交错不等式 . 相似文献
3.
Hermite矩阵广义Schur补的特征值交错性质 总被引:1,自引:0,他引:1
何淦瞳 《纯粹数学与应用数学》2008,24(3)
研究了Hermite矩阵的Schur补的特征值交错性质,将Smith建立的结果推广到Hermite矩阵的广义Sclmr补. 相似文献
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0引言矩阵特征值和奇异值的估计,在数值代数、线性系统及控制论、力学等学科中有着十分重要的应用.中外学者获得了许多著名结果,但对Schur补的特征值及奇异值的估计则较困难.我国学者王伯英等得到了矩阵Hadamard之积的Schur补不等式及广义Schur余不等式,刘建州等给出了矩阵乘积的Schur补的奇异值估计.本文改进和推广了文献[2]、[4]和[5]中的一些不等式. 相似文献
6.
本文研究了正定厄米特矩阵Schur补的迹和特征值的性质,通过一个不等式的证明,得到了正定厄米特矩阵和的Schur补与正定厄米特矩阵Schur补的和的迹和特征值之间的不等式. 相似文献
7.
郑建青 《纯粹数学与应用数学》2014,(1):45-52
利用复矩阵的Schur补和次正定性,研究了次正定复矩阵的次Schur补的一些性质,得到了次正定复矩阵次Schur补的几个行列式不等式,将相关文献的相应结果由次正定次Hermite矩阵推广到次正定复矩阵. 相似文献
8.
正定矩阵的Khatri-Rao乘积的块Schur补的逆的一些偏序 总被引:8,自引:1,他引:7
给出了分块矩阵的块Schur补的定义,得到一些正定矩阵的Khatri-Rao乘积的块Schur补的逆的偏序,推广了正定矩阵的Hadamare乘积的相应结果。 相似文献
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在谢邦杰教授的特征值与行列式定义下,本文定义了自共轭四元数矩阵的惯性,得到了分块的自共轭四元数矩阵的含有广义 Schur 补的惯性公式与行列式公式,并将 Carlso-Haynsworth-Markhan 行列式不等式推广到四元数体上。 相似文献
11.
We introduce new expressions for the generalized Drazin inverse of a block matrix with the generalized Schur complement being generalized Drazin invertible in a Banach algebra under some conditions. We generalized some recent results for Drazin inverse and group inverse of complex matrices. 相似文献
12.
Yasuhide Numata 《Journal of Algebraic Combinatorics》2007,26(1):27-45
Young's lattice, the lattice of all Young diagrams, has the Robinson-Schensted-Knuth correspondence, the correspondence between
certain matrices and pairs of semi-standard Young tableaux with the same shape. Fomin introduced generalized Schur operators
to generalize the Robinson-Schensted-Knuth correspondence. In this sense, generalized Schur operators are generalizations
of semi-standard Young tableaux. We define a generalization of Schur polynomials as expansion coefficients of generalized
Schur operators. We show that the commutation relation of generalized Schur operators implies Pieri's formula for generalized
Schur polynomials. 相似文献
13.
Summary.
We present generalizations of the nonsymmetric Levinson and Schur algorithms
for non-Hermitian Toeplitz matrices with some singular or
ill-conditioned
leading principal submatrices. The underlying recurrences allow us to
go from any pair of successive well-conditioned leading principal submatrices
to any such pair of larger order. If the look-ahead step size between
these pairs is bounded, our generalized Levinson and Schur recurrences
require $ operations, and the Schur recurrences can be combined
with recursive doubling so that an $ algorithm results.
The overhead (in operations and storage) of look-ahead steps is very small.
There are various options for applying these algorithms to solving linear
systems with Toeplitz matrix.
Received July 26, 1993 相似文献
14.
We investigate a step-by-step solving of ordered generalized interpolation problems for Stieltjes matrix functions and obtain a multiplicative representation for the sequence of resolvent matrices. Thematrix factors inmultiplicative representations of the resolventmatrices are expressed through the Schur–Stieltjes parameters, for which we obtain explicit formulas and give an algorithm of step-by-step solving of Stieltjes type interpolation problems. As examples, we consider step-by-step solutions of the Stieltjes matrix moment problem and the problems by Nevanlinna–Pick and Caratheodory. 相似文献
15.
In this article, two facts related to the generalized Schur complement are studied. The first one is to find necessary and sufficient conditions to characterize when the group inverse of a partitioned matrix can be expressed in the Schur form. The other one is to develop a formula for any power of the generalized Schur complement of an idempotent partitioned matrix and then to characterize when this generalized Schur complement is a (k+1)-potent matrix. In addition, some spectral theory related to this complement is analyzed. 相似文献
16.
《Linear and Multilinear Algebra》2007,55(6):535-543
We obtain new representations for the general positive and real-positive solutions of the equation axa*=c in a C*-algebra using the characterization of positivity based on a matrix representation of an element and the generalized Schur complement. Applications to the equation AXA*=C for operators between Hilbert spaces and for finite matrices are given. 相似文献
17.
Generalized Schur complements involving the Kronecker products of positive semidefinite matrices are studied in this paper. Some equalities and inequalities for generalized Schur complements involving Kronecker products are obtained by considering properties of permutations. Moreover, some inequalities for eigenvalues involving generalized Schur complements and Kronecker products are derived.
相似文献