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A note on spectra of optimal and superoptimal preconditioned matrices

Authors :
Cheng, Che-Man
Jin, Xiao-Qing
Vong, Seak-Weng
Wang, Wei
Source :
Linear Algebra & its Applications. Apr2007, Vol. 422 Issue 2/3, p482-485. 4p.
Publication Year :
2007

Abstract

Abstract: In this short note, it is proved that given any positive definite Hermitian matrix, the eigenvalues of the superoptimal preconditioned matrix do not exceed the corresponding eigenvalues of the optimal preconditioned matrix. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
00243795
Volume :
422
Issue :
2/3
Database :
Academic Search Index
Journal :
Linear Algebra & its Applications
Publication Type :
Academic Journal
Accession number :
24220412
Full Text :
https://doi.org/10.1016/j.laa.2006.11.006