Title
Two block triangular preconditioners for asymmetric saddle point problems
Abstract
In this paper, two block triangular preconditioners for the asymmetric saddle point problems with singular (1,1) block are presented. The spectral characteristics of the preconditioned matrices are discussed in detail. Theoretical analysis shows that all the eigenvalues of the preconditioned matrices are strongly clustered. Numerical experiments are reported to the efficiency of the proposed preconditioners.
Year
DOI
Venue
2015
10.1016/j.amc.2015.07.093
Applied Mathematics and Computation
Keywords
Field
DocType
Block triangular preconditioner,Saddle point problems,Nullity,Augmentation,Krylov subspace method
Mathematical optimization,Saddle point,Matrix (mathematics),Mathematics,Eigenvalues and eigenvectors
Journal
Volume
Issue
ISSN
269
C
0096-3003
Citations 
PageRank 
References 
0
0.34
15
Authors
2
Name
Order
Citations
PageRank
Cui-xia Li19113.47
Shi-liang Wu29015.82