On choice of preconditioner for minimum residual methods for nonsymmetric matrices

Existing convergence bounds for Krylov subspace methods such as GMRES for nonsymmetric linear systems give little mathematical guidance for the choice of preconditioner. Here, we establish a desirable mathematical property of a preconditioner which indicates when convergence of a minimum residual me...

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Bibliografske podrobnosti
Main Authors: Pestana, J, Wathen, A
Format: Report
Izdano: SIMAX 2011