Using constraint preconditioners with regularized saddle-point problems

The problem of finding good preconditioners for the numerical solution of a certain important class of indefinite linear systems is considered. These systems are of a 2 by 2 block (KKT) structure in which the (2,2) block (denoted by -C) is assumed to be nonzero. In Constraint preconditioning for ind...

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Bibliographic Details
Main Authors: Dollar, H, Gould, N, Schilders, W, Wathen, A
Format: Report
Published: Unspecified 2005