Quasi-Minimal Residual Eigenpairs |
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| Authors: | Jens-Peter M. Zemke |
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| Affiliation: | Institut für Numerische Simulation, Technische Universität Hamburg–Harburg, D–21071 Hamburg, Germany |
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| Abstract: | We consider the extraction of approximate eigenpairs from a given Krylov subspace that are optimal, or at least quasi–optimal with respect to the normwise backward error. An algorithm based on Newton–Grassmannian optimization and a simple example are given; a useful graphical method of comparison with other extraction methods is briefly sketched. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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