Sprengel, Frauke Comparing multilevel coarsening strategies. (English) Zbl 1024.65120 ETNA, Electron. Trans. Numer. Anal. 14, 178-194 (2002). Several multilevel coarsening strategies are compared by using stable subspace splitting techniques. The obtained condition numbers show how well the coarsening strategies are suited for solving an anisotropic elliptic boundary value problem. Reviewer: Plamen Yordanov Yalamov (Russe) MSC: 65N55 Multigrid methods; domain decomposition for boundary value problems involving PDEs 65N30 Finite element, Rayleigh-Ritz and Galerkin methods for boundary value problems involving PDEs 35J25 Boundary value problems for second-order elliptic equations 65F35 Numerical computation of matrix norms, conditioning, scaling 65F10 Iterative numerical methods for linear systems Keywords:finite elements; multilevel algorithms; semi-coarsening; subspace splitting; condition numbers; anisotropic elliptic boundary value problem PDF BibTeX XML Cite \textit{F. Sprengel}, ETNA, Electron. Trans. Numer. Anal. 14, 178--194 (2002; Zbl 1024.65120) Full Text: EuDML EMIS OpenURL