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- W2085450069 abstract "We study the HSS iteration method for large sparse non-Hermitian positive definite Toeplitz linear systems, which first appears in Bai, Golub and Ng’s paper published in 2003 [Z.-Z. Bai, G.H. Golub, M.K. Ng, Hermitian and skew-Hermitian splitting methods for non-Hermitian positive definite linear systems, SIAM J. Matrix Anal. Appl. 24 (2003) 603–626], and HSS stands for the Hermitian and skew-Hermitian splitting of the coefficient matrix A. In this note we use the HSS iteration method based on a special case of the HSS splitting, where the symmetric part H=12(A+AT) is a centrosymmetric matrix and the skew-symmetric part S=12(A−AT) is a skew-centrosymmetric matrix for a given Toeplitz matrix. Hence, fast methods are available for computing the two half-steps involved in the HSS and IHSS iteration methods. Some numerical results illustrate their effectiveness." @default.
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- W2085450069 date "2009-02-01" @default.
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- W2085450069 title "On the HSS iteration methods for positive definite Toeplitz linear systems" @default.
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- W2085450069 doi "https://doi.org/10.1016/j.cam.2008.06.002" @default.
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