On the eigenvalues and eigenvectors of nonsymmetric saddle point matrices preconditioned by block triangular matrices

On the eigenvalues and eigenvectors of nonsymmetric saddle point matrices preconditioned by block triangular matrices

Block lower triangular and block upper triangular matrices are popular preconditioners for nonsymmetric saddle point matrices. In this note we show that a block lower triangular preconditioner gives the same spectrum as a block upper triangular preconditioner and that the eigenvectors of the two pre...

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Bibliografiske detaljer
Hovedforfatter:	Pestana, J
Format:	Journal article
Udgivet:	2013

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