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Reference: Malcolm F. Murphy, Gene H. Golub and A. J. Wathen, (1999). A note on preconditioning for indefinite linear systems. SIAM.Citable link to this page:

 

A note on preconditioning for indefinite linear systems

Abstract: Preconditioners are often conceived as approximate inverses. For nonsingular indefinite matrices of saddle-point (or KKT) form, we show how preconditioners incorporating an exact Schur complement lead to preconditioned matrices with exactly two or exactly three distinct eigenvalues. Thus approximations of the Schur complement lead to preconditioners which can be very effective even though they are in no sense approximate inverses.

Bibliographic Details

Issue Date: 1999-06Identifiers

Urn: uuid:36c706dd-45d0-4882-9ff3-cae603b964be Item Description

Type: Technical Report;

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Autor: Malcolm F. Murphy - - - Gene H. Golub - - - A. J. Wathen - - - - Bibliographic Details Issue Date: 1999-06 - Identifiers Urn: uui

Fuente: https://ora.ox.ac.uk/objects/uuid:36c706dd-45d0-4882-9ff3-cae603b964be



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