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Look-ahead Levinson and Schur algorithms for non-Hermitian Toeplitz systems

โœ Scribed by Martin H. Gutknecht; Marlies Hochbruck


Publisher
Springer-Verlag
Year
1995
Tongue
English
Weight
432 KB
Volume
70
Category
Article
ISSN
0029-599X

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๐Ÿ“œ SIMILAR VOLUMES


Preconditioners for non-Hermitian Toepli
โœ Raymond H. Chan; Daniel Potts; Gabriele Steidl ๐Ÿ“‚ Article ๐Ÿ“… 2001 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 131 KB

In this paper, we construct new !-circulant preconditioners for non-Hermitian Toeplitz systems, where we allow the generating function of the sequence of Toeplitz matrices to have zeros on the unit circle. We prove that the eigenvalues of the preconditioned normal equation are clustered at 1 and tha