The paper deals with Krylov methods for approximating functions of matrices via interpolation. In this frame residual smoothing techniques based on quasi-kernel polynomials are considered. Theoretical results as well as numerical experiments illustrate the effectiveness of our approach.
Interpolating functions of matrices on zeros of quasi-kernel polynomials / Moret, Igor; Novati, Paolo. - In: NUMERICAL LINEAR ALGEBRA WITH APPLICATIONS. - ISSN 1070-5325. - STAMPA. - 12:(2005), pp. 337-353. [10.1002/nla.393]
Interpolating functions of matrices on zeros of quasi-kernel polynomials.
MORET, IGOR;NOVATI, PAOLO
2005-01-01
Abstract
The paper deals with Krylov methods for approximating functions of matrices via interpolation. In this frame residual smoothing techniques based on quasi-kernel polynomials are considered. Theoretical results as well as numerical experiments illustrate the effectiveness of our approach.File in questo prodotto:
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