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Wittum, Gabriel 1956-

Overview
Works: 36 works in 60 publications in 2 languages and 700 library holdings
Genres: Conference proceedings 
Roles: Editor
Classifications: QA377, 004.3
Publication Timeline
Key
Publications about Gabriel Wittum
Publications by Gabriel Wittum
Most widely held works by Gabriel Wittum
Numerical solution of elliptic differential equations by reduction to the interface by Boris N Khoromskij( Book )
6 editions published in 2004 in English and held by 168 libraries worldwide
This is the first book that deals systematically with the numerical solution of elliptic partial differential equations by their reduction to the interface via the Schur complement. Inheriting the beneficial features of finite element, boundary element and domain decomposition methods, our approach permits solving iteratively the Schur complement equation with linear-logarithmic cost in the number of the interface degrees of freedom. The book presents the detailed analysis of the efficient data-sparse approximation techniques to the nonlocal Poincaré-Steklov interface operators associated with the Laplace, biharmonic, Stokes and Lamé equations. Another attractive topic are the robust preconditioning methods for elliptic equations with highly jumping, anisotropic coefficients. A special feature of the book is a unified presentation of the traditional iterative substructuring and multilevel methods combined with modern matrix compression techniques applied to the Schur complement on the interface
Multigrid methods V : proceedings of the Fifth European Multigrid Conference, held in Stuttgart, Germany, October 1-4, 1996 by W Hackbusch( Book )
10 editions published in 1998 in English and held by 114 libraries worldwide
This volume contains a selection from the papers presented at the Fifth European Multigrid Conference, held in Stuttgart, October 1996. All contributions were carefully refereed. The conference was organized by the Institute for Computer Applications (ICA) of the University of Stuttgart, in cooperation with the GAMM Committee for Scientific Computing, SFB 359 and 404 and the research network WiR Ba-Wü. The list of topics contained lectures on Multigrid Methods: robustness, adaptivity, wavelets, parallelization, application in computational fluid dynamics, porous media flow, optimisation and computational mechanics. A considerable part of the talks focused on algebraic multigrid methods
Incomplete decomposition (ILU) : algorithms, theory, and applications : proceedings of the Eighth GAMM-Seminar, Kiel, January 24-26, 1992 by GAMM-Seminar( Book )
1 edition published in 1993 in English and held by 45 libraries worldwide
Adaptive methods--algorithms, theory and applications : proceedings of the Ninth GAMM-Seminar, Kiel, January 22-24, 1993 by GAMM-Seminar( Book )
2 editions published in 1994 in English and held by 44 libraries worldwide
Filternde Zerlegungen : schnelle Löser für grosse Gleichungssysteme by Gabriel Wittum( Book )
3 editions published between 1990 and 1992 in German and held by 43 libraries worldwide
Fast solvers for flow problems : proceedings of the Tenth GAMM-Seminar, Kiel, January 14-16, 1994 by GAMM Seminar( Book )
1 edition published in 1995 in English and held by 37 libraries worldwide
Numerical treatment of multi-scale problems : proceedings of the 13th GAMM-Seminar, Kiel, January 24-26, 1997 by GAMM-Seminar( Book )
1 edition published in 1999 in English and held by 35 libraries worldwide
Numerical treatment of coupled systems : proceedings of the Eleventh GAMM-Seminar Kiel, January 20-22, 1995 by GAMM-Seminar( Book )
3 editions published in 1995 in English and held by 32 libraries worldwide
Boundary elements : implementation and analysis of advanced algorithms : proceedings of the Twelfth GAMM-Seminar, Kiel, January 19-21, 1996 by W Hackbusch( Book )
1 edition published in 1996 in German and held by 27 libraries worldwide
Numerische Algorithmen auf Transputer-Systemen ( Book )
1 edition published in 1993 in German and held by 26 libraries worldwide
Numerical Treatment of Coupled Systems Proceedings of the Eleventh GAMM-Seminar, Kiel, January 20-22, 1995 by W Hackbusch( file )
1 edition published in 1995 in English and held by 15 libraries worldwide
Filtering Algebraic Multigrid and Adaptive Strategies ( Computer File )
1 edition published in 2006 in English and held by 5 libraries worldwide
Solving linear systems arising from systems of partial differential equations, multigrid and multilevel methods have proven optimal complexity and efficiency properties. Due to shortcomings of geometric approaches, algebraic multigrid methods have been developed. One example is the filtering algebraic multigrid method introduced by C. Wagner. This paper proposes a variant of Wagner's method with substantially improved robustness properties. The method is used in an adaptive, self-correcting framework and tested numerically
Competence in high performance computing 2010 proceedings of an International Conference on Competence in High Performance Computing, June 2010, Schloss Schwetzingen, Germany by Christian Bischof( Book )
3 editions published in 2011 in English and held by 5 libraries worldwide
This book presents the state-of-the-art in simulation on supercomputers. Leading researchers present results achieved on systems of the Gauss-Allianz, the association of High-Performance Computing centers in Germany. The reports cover all fields of computational science and engineering, ranging from CFD to Computational Physics and Biology to Computer Science, with a special emphasis on industrially relevant applications. Presenting results for large-scale parallel microprocessor-based systems and GPU and FPGA-supported systems, the book makes it possible to compare the performance levels and usability of various architectures. Its outstanding results in achieving the highest performance for production codes are of particular interest for both scientists and engineers. The book includes a wealth of color illustrations and tables
Large-scale density-driven flow simulation using parallel unstructured grid adaptation and local multigrid methods by Stefan Lang( Book )
1 edition published in 2004 in English and held by 4 libraries worldwide
Multi-grid methods for Stokes and Navier-Stokes equations : transforming smoothers ; algorithms and numerical results by Gabriel Wittum( Book )
1 edition published in 1988 in German and held by 4 libraries worldwide
Homogenization and multigrid by Nicolas Neuß( Book )
1 edition published in 1998 in English and held by 4 libraries worldwide
Robust multilevel elliptic problem solvers for anisotropic unstructured geometries by Boris N Choromskij( Book )
1 edition published in 1994 in German and held by 3 libraries worldwide
Frequency filtering for elliptic interface problems with Lagrange multipliers by Boris N Choromskij( Book )
1 edition published in 1995 in English and held by 3 libraries worldwide
Spektralverschobene Iterationen by Gabriel Wittum( Book )
1 edition published in 1995 in German and held by 3 libraries worldwide
 
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Alternative Names
Wittum, G.
Wittum, Gabriel
Languages
English (34)
German (8)
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