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TW 454
Steven Delvaux, and Marc Van Barel
A QR-based solver for rank structured matrices
Abstract
n this paper we show how to compute the QR-factorization of a rank structured matrix in an efficient way, using the Givens-weight representation which we introduced in an earlier paper. We also show how the QR-factorization can be used as a preprocessing step for the solution of linear systems. The performance of this scheme will be demonstrated by the results of some numerical experiments.
report.pdf (433K) / mailto: M. Van Barel