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Title: Structured backward errors for generalized saddle point systems
Authors: Chen, XS
Li, W
Chen, X 
Liu, J
Keywords: Frobenius norm
Generalized saddle point system
Structured backward error
Issue Date: 2012
Publisher: North-Holland
Source: Linear algebra and its applications, 2012, v. 436, no. 9, p. 3109-3119 How to cite?
Journal: Linear algebra and its applications 
Abstract: In this paper we investigate structured backward errors for three kinds of generalized saddle point systems where the matrix is not symmetric and its (2,2) block is not zero and has perturbations. Computable formula of backward errors are derived. The expressions are useful for testing the stability of practical algorithms.
ISSN: 0024-3795
EISSN: 1873-1856
DOI: 10.1016/j.laa.2011.10.012
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