Spectral refinement for clustered eigenvalues of quasi-diagonal matrices

DOI10.1016/j.laa.2005.03.004zbMath1089.65029OpenAlexW2026499775MaRDI QIDQ819142

Alain Largillier, Filomena Dias d'Almeida, Paulo B. Vasconcelos, Mario Ahues

Publication date: 22 March 2006

Published in: Linear Algebra and its Applications (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1016/j.laa.2005.03.004

zbMATH Keywords

numerical experimentsEigenvectorsClustered eigenvaluesPerturbation theoryPerturbed fixed slopeQuasi-diagonal matricesSpectral refinement

Mathematics Subject Classification ID

Computational methods for sparse matrices (65F50) Numerical computation of eigenvalues and eigenvectors of matrices (65F15)

Related Items

On uniform connectivity of algebraic matrix sets

Uses Software

• LAPACK
• JDQR
• JDQZ

Cites Work

• Unnamed Item
• Spectral refinement on quasi-diagonal matrices
• Templates for the Solution of Algebraic Eigenvalue Problems