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- 1.0404173 - UIVT-O 220004 CZ eng V - Research Report
Tůma, Miroslav
A Note on the LDL T Decomposition of Sparse Symmetric Quasisemidefinite Matrices.
Prague: ICS AS CR, 1997. 14 s. Technical Report, V-733.
R&D Projects: GA AV ČR IAA2030706; GA ČR GA205/96/0921
Keywords : systems of sparse linear algebraic equations * symmetric indefinite systems * direct methods * LTDT decomposition * supernodal solvers
Permanent Link: http://hdl.handle.net/11104/0124440 - 2.0403595 - UIVT-O 980149 CZ eng V - Research Report
Paige, Ch. - Strakoš, Zdeněk
Residuals and Singular Values in Linear Least Squares Problems.
Prague: ICS AS CR, 1998. 23 s. Technical Report, V-765.
R&D Projects: GA ČR GA205/96/0921; GA AV ČR IAA2030706
Keywords : least squares * singular values * linear equations * large sparse matrices * Krylov methods * iterative solution * GMRES * modified Gram-Schmidt
Permanent Link: http://hdl.handle.net/11104/0123894File Download Size Commentary Version Access v765-98.pdf 13 264.4 KB Other open-access - 3.0403594 - UIVT-O 980148 CZ eng V - Research Report
Gutknecht, M. H. - Paige, Ch. - Strakoš, Zdeněk
Accuracy of Two Three-term and Three Two-term Recurrences for Krylov Space Solvers.
Prague: ICS AS CR, 1997. 21 s. Technical Report, V-764.
R&D Projects: GA ČR GA205/96/0921; GA AV ČR IAA2030706
Keywords : linear system of equations * iterative method * Krylov space method * conjugate gradient method * tree-term recurrence * accuracy * roundoff
Permanent Link: http://hdl.handle.net/11104/0123893File Download Size Commentary Version Access v764-97.pdf 12 275.8 KB Other open-access - 4.0403411 - UIVT-O 980064 CH eng V - Research Report
Maryška, Jiří - Rozložník, Miroslav - Tůma, Miroslav
Schur Complement Reduction in the Mixed-hybrid Approximation of Darcy's Law: Rounding Error Analysis.
Zürich: Swiss Center for Scientific Computing, 1998. 16 s. SCSC Technical Report, TR-98-06.
R&D Projects: GA ČR GA205/96/0921; GA ČR GA201/98/P108
Permanent Link: http://hdl.handle.net/11104/0123721 - 5.0403281 - UIVT-O 970172 CZ eng V - Research Report
Maryška, Jiří - Rozložník, Miroslav - Tůma, Miroslav
The Schur Complement Systems in the Mixed Hybrid Finite Element Approximation of the Potential Fluid Flow Problem.
Prague: ICS AS CR, 1997. 18 s. Technical Report, V-730.
R&D Projects: GA ČR GA205/96/0921
Permanent Link: http://hdl.handle.net/11104/0123595File Download Size Commentary Version Access v730-97.pdf 14 306.8 KB Other open-access