Found 22 Documents (Results 1–22)
Evaluation of multilevel sequentially semiseparable preconditioners on computational fluid dynamics benchmark problems using incompressible flow and iterative solver software. (English) Zbl 1386.65104
Data-sparse approximation on the computation of a weakly singular Fredholm equation: a stellar radiative transfer application. (English) Zbl 1357.65324
New homotopic/factorization and symmetrization techniques for Newton’s and Newton/structured iteration. (English) Zbl 1155.65342
A Levinson-like algorithm for symmetric strongly nonsingular higher order semiseparable plus band matrices. (English) Zbl 1102.65032
MSC:
65F05
Minimal quasi-separable realizations for the inverse of a quasi-separable operator. (English) Zbl 1096.47023
Reviewer: Rémi Vaillancourt (Ottawa)
Orthogonal similarity transformation of a symmetric matrix into a diagonal-plus-semiseparable one with free choice of the diagonal. (English) Zbl 1086.65040
A unitary Hessenberg \(QR\)-based algorithm via semiseparable matrices. (English) Zbl 1078.65029
Reviewer: R. P. Tewarson (Stony Brook)
MSC:
65F15
Transformations to rank structures by unitary similarity. (English) Zbl 1076.15004
Reviewer: John D. Dixon (Ottawa)
Fast and stable QR eigenvalue algorithms for generalized companion matrices and secular equations. (English) Zbl 1072.65068
Reviewer: Constantin Popa (Constanta)
Inverse power and Durand-Kerner iterations for univariate polynomial root-finding. (English) Zbl 1054.65046
Reviewer: Vasile Berinde (Baia Mare)
Two fast algorithms for solving diagonal-plus-semiseparable linear systems. (English) Zbl 1038.65025
Orthogonal basis functions in discrete least-squares rational approximation. (English) Zbl 1046.93010
A modification of the Dewilde-van der Veen method for inversion of finite structured matrices. (English) Zbl 1010.65013
Reviewer: Aurel Galántai (Miskolc-Egyetemvaros)
Fast and stable two-way algorithm for diagonal plus semi-separable systems of linear equations. (English) Zbl 1051.65021
Reviewer: Jan Chleboun (Praha)
Linear complexity inversion algorithms for a class of structured matrices. (English) Zbl 0949.65021
Reviewer: Peter Reichensperger (Oberasbach)
On a new class of structured matrices. (English) Zbl 0934.15002
Reviewer: P.Narain (Bombay)
A look-ahead block Schur algorithm for diagonal plus semiseparable matrices. (English) Zbl 0999.65016
Linear complexity algorithm for semiseparable matrices. (English) Zbl 0901.65014
Reviewer: Petko Hr.Petkov (Sofia)
MSC:
65F05
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