New band toeplitz preconditioners for ill-conditioned symmetric positive definite Toeplitz systems

It is well known that preconditioned conjugate gradient (PCG) methods are widely used to solve ill-conditioned Toeplitz linear systems Tn(f)x=b. In this paper we present a new preconditioning technique for the solution of symmetric Toeplitz systems generated by nonnegative functions f with zeros of...

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Veröffentlicht in:	SIAM journal on matrix analysis and applications 2002, Vol.23 (3), p.728-743
Hauptverfasser:	NOUTSOS, D, VASSALOS, P
Format:	Artikel
Sprache:	eng
Schlagworte:	Algebra Approximation Eigenvalues Exact sciences and technology Linear and multilinear algebra, matrix theory Mathematics Methods Numerical analysis Numerical analysis. Scientific computation Numerical linear algebra Polynomials Sciences and techniques of general use
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