Perturbations of direct complements in Hilbert spaces

DOI10.1016/j.aml.2006.05.013zbMath1165.46011OpenAlexW2050550320MaRDI QIDQ1001108

Vladimir Rakočevič

Publication date: 12 February 2009

Published in: Applied Mathematics Letters (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1016/j.aml.2006.05.013

zbMATH Keywords

gapsemi-Fredholm operatorclosed subspacecanonical angles

Mathematics Subject Classification ID

Hilbert and pre-Hilbert spaces: geometry and topology (including spaces with semidefinite inner product) (46C05) (Semi-) Fredholm operators; index theories (47A53)

Cites Work

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• On global geometric properties of subspaces in Hilbert space
• A pointwise criterion for controller robustness
• Canonical angles of unitary spaces and perturbations of direct complements
• Lower analogues of Gelfand and Kolmogorov numbers
• On the norm of idempotents in \(C^*\)-algebras
• On the Norm of Idempotent Operators in a Hilbert Space
• Lower s-numbers and their asymptotic behaviour
• Eigenvalues of the difference and product of projections
• Inverting the Difference of Hilbert Space Projections
• Hilbert space idempotents and involutions

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