Relationship between the characteristic polynomial and the spectrum of a diagonalizable matrix and those of its low-rank update
Relationship between the characteristic polynomial and the spectrum of a diagonalizable matrix and those of its low-rank update
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可对角化矩阵及其低秩更新的特征多项式与谱的关系
DOI:
10.1080/03081087.2011.639372
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发表时间:
2012-07
影响因子:
1.1
通讯作者:
Wei, Yimin
中科院分区:
文献类型:
--
作者:
Wu, Gang;Wei, Yimin
Low-rank updated matrices are of crucial importance in many applications. Recently the relationship between the characteristic polynomial and the spectrum of a given matrix A and those of its specially structured rank-k updated matrix has become a hot topic. Many researchers consider the eigenproblem of a matrix of the form under the assumption that the columns of U k or V k are right or left eigenvectors corresponding to some non-defective eigenvalues of A. However, in many low-rank updated eigenproblems, this assumption does not hold. In this article, we investigate the low-rank updated eigenproblem without such a constraint; that is, our low-rank updates U k , V k ∈ ℂ n×k can be any complex matrices such that is a rank-k matrix. We first consider the relationship between the characteristic polynomial of a diagonalizable matrix and that of its rank-k update. We then focus on two special cases of k = 1 and k = 2. Moreover, the spectral relationship between a diagonalizable matrix and its rank-1 and rank-2 updates is considered. Some applications of our results to the low-rank updated singular value problem are also discussed.
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影响因子:
1.4
作者:
R. Bellman
通讯作者:
R. Bellman
DOI:
--
发表时间:
2010
期刊:
--
影响因子:
--
作者:
Ilse C. F. Ipsen;Dean Lee;Rizwana Rehman
通讯作者:
Ilse C. F. Ipsen;Dean Lee;Rizwana Rehman
DOI:
10.1016/j.cam.2010.02.005
发表时间:
2010-10
期刊:
J. Comput. Appl. Math.
影响因子:
--
作者:
A. Cicone;S. Capizzano
通讯作者:
A. Cicone;S. Capizzano
DOI:
10.1016/j.camwa.2009.02.027
发表时间:
2009-05
期刊:
Comput. Math. Appl.
影响因子:
--
作者:
Zhiping Xiong;B. Zheng
通讯作者:
Zhiping Xiong;B. Zheng
DOI:
10.1137/100788392
发表时间:
2011-02
期刊:
SIAM J. Matrix Anal. Appl.
影响因子:
--
作者:
Rizwana Rehman;Ilse C. F. Ipsen
通讯作者:
Rizwana Rehman;Ilse C. F. Ipsen