Volume 17, Issue 1
Iterative Methods with Preconditioners for Indefinite Systems

Wei Qing Ren and Jin Xi Zhao

J. Comp. Math., 17 (1999), pp. 89-96

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  • Abstract

For the sparse linear equations Kx=b, where K arising from optimization and discretization of some PDEs is symmetric and indefinite, it is shown that the L[AKL-D]~T factorization can be used to provide an "exact" preconditioner for SYMMLQ and UZAWA algorithms. "Inexact" preconditioner derived from approximate factorization is used in the numerical experiments.

  • History

Published online: 1999-02

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