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Capizzano, S. S.
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Serra Capizzano, S.
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preconditioning
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conjugate gradient
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matrices
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nonnegative generating-functions
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pcg
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behavior
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matrix algebras
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optimal convergence
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sequences
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two-level toeplitz matrix
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2011
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ΑΠΟΘΕΤΗΡΙΟ "ΟΛΥΜΠΙΑΣ"
Σχολή Θετικών Επιστημών
Τμήμα Μαθηματικών
Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά). ΜΑΘ
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Spectral equivalence and matrix algebra preconditioners for multilevel Toeplitz systems: a negative result. (Journal article)
The conditioning of FD matrix sequences coming from semi-elliptic differential equations (Journal article)
Superlinear convergence for PCG using band plus algebra preconditioners for Toeplitz systems (Journal article)
Two-level Toeplitz preconditioning: Approximation results for matrices and functions (Journal article)
Asymptotic behavior of the condition number of two-level Toeplitz matrix sequences (Journal article)
Band plus algebra preconditioners for two-level Toeplitz systems (Journal article)
Block band Toeplitz preconditioners derived from generating function approximations: analysis and applications (Journal article)
Matrix algebra preconditioners for multilevel Toeplitz systems do not insure optimal convergence rate (Journal article)
New band Toeplitz preconditioners for ill-conditioned symmetric positive definite Toeplitz systems (Journal article)
A preconditioning proposal for ill-conditioned Hermitian two-level Toeplitz systems (Journal article)