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Dokumenttyp:
Zeitschriftenaufsatz 
Autor(en):
Wiesner, T. A.; Tuminaro, R. S.; Wall, W. A.; Gee, M. W. 
Titel:
Multigrid transfers for nonsymmetric systems based on Schur complements and Galerkin projections 
Abstract:
A framework is proposed for constructing algebraic multigrid transfer operators suitable for nonsymmetric positive definite linear systems. This framework follows a Schur complement perspective as this is suitable for both symmetric and nonsymmetric systems. In particular, a connection between algebraic multigrid and approximate block factorizations is explored. This connection demonstrates that the convergence rate of a two-level model multigrid iteration is completely governed by how well the...    »
 
Stichworte:
algebraic multigrid, Schur complement, Galerkin projection, nonsymmetric problems 
Dewey Dezimalklassifikation:
620 Ingenieurwissenschaften 
Zeitschriftentitel:
Numerical Linear Algebra with Applications 
Jahr:
2014 
Band / Volume:
21 
Heft / Issue:
Seitenangaben Beitrag:
415-438 
Nachgewiesen in:
Scopus 
Reviewed:
ja 
Sprache:
en 
Status:
Verlagsversion / published