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Abstract We propose several circulant preconditioners for systems defined by some functions g of Toeplitz matrices A n . In this paper we are interested in solving g ( A… Click to show full abstract
Abstract We propose several circulant preconditioners for systems defined by some functions g of Toeplitz matrices A n . In this paper we are interested in solving g ( A n ) x = b by the preconditioned conjugate method or the preconditioned minimal residual method, namely in the cases when g ( z ) are the functions e z , sin z and cos z . Numerical results are given to show the effectiveness of the proposed preconditioners.
Keywords:
functions toeplitz;
toeplitz matrices;
defined functions;
preconditioners systems;
optimal preconditioners;
systems defined
Journal Title: Linear Algebra and its Applications
Year Published: 2018
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Journal Title: Linear Algebra and its Applications
Year Published: 2018
Link to full text (if available)
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recommendations!