The antitriangular factorisation of saddle point matrices

Mastronardi and Van Dooren recently introduced the block antitriangular ("Batman") decomposition for symmetric indefinite matrices. Here we show the simplification of this factorisation for saddle point matrices and demonstrate how it represents the common nullspace method. We show the rel...

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Detalhes bibliográficos
Main Authors: Pestana, J, Wathen, A
Formato: Report
Publicado em: Unspecified 2013