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Inverse product Toeplitz preconditioners for non-Hermitian Toeplitz systems

โœ Scribed by Fu-Rong Lin; Michael K. Ng


Publisher
Springer US
Year
2009
Tongue
English
Weight
375 KB
Volume
54
Category
Article
ISSN
1017-1398

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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