RecordNumber
1775
Author
Faber, Vance
Crop_Body
Vance Faber and Thomas Manteuffel
Title of Article
Necessary and Sufficient conditions for the existence of a conjugate gradient method
Title Of Journal
SIAM
PublishInfo
Society for Industrial and Applied Mathematics
Publication Year
1984
Volum
21
Issue Number
2
Page
252-262
Abstract
We characterize the class CG(s) of matrices A for which the linear system Ax b can be solved by an s-term conjugate gradient method. We show that, except for a few anomalies, the class CG(s) consists of matrices A for which conjugate gradient methods are already known. These matrices are the Hermitian matrices, A*= A, and the matrices of the form A ei(dI + B), with B* =-B.
URL
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