Articles containing subject class 47A55:

MIA-04-03 » Relative boundedness-compactness inequalities for a second order differential operator (01/2001)
OaM-01-05 » Weak contractions and trace class perturbations (03/2007)
OaM-02-19 » Spectral perturbation bounds for selfadjoint operators I (09/2008)
OaM-03-07 » Normalized numerical ranges of some operators (03/2009)
OaM-03-15 » Trace inequalities and spectral shift (06/2009)
OaM-04-01 » The Kato decomposition of quasi-Fredholm relations (03/2010)
MIA-14-50 » Weyl type theorems and class A(s,t) operators (07/2011)
OaM-06-45 » Closed linear relations and their regular points (12/2012)
OaM-07-01 » On Hilbert-Schmidt compatibility (03/2013)
OaM-07-22 » Jordan forms of real and complex matrices under rank one perturbations (06/2013)
OaM-07-49 » One-dimensional Schrödinger operators with δ'-interactions on a set of Lebesgue measure zero (12/2013)
OaM-08-03 » Similarity of perturbations of the shift and a different product of rational functions (03/2014)
OaM-08-11 » Essential spectra of some matrix operators by means of measures of weak noncompactness (03/2014)
OaM-08-38 » Rank-one perturbations of normal operators and hyponormality (09/2014)
OaM-09-30 » Spectral points of type π+ and type π- of closed operators in indefinite inner product spaces (09/2015)
OaM-10-07 » Generic rank-two perturbations of structured regular matrix pencils (03/2016)
OaM-10-25 » Finite rank perturbations and solutions to the operator Riccati equation (06/2016)
OaM-11-08 » A bound for the Hilbert-Schmidt norm of generalized commutators of nonself-adjoint operators (03/2017)
OaM-11-32 » Inequalities for eigenvalues of compactly perturbed unitary operators (06/2017)
OaM-12-06 » Estimates on singular values of functions of perturbed operators (03/2018)
OaM-12-21 » Hypercyclicity and Weyl type theorems for operator matrices (06/2018)
OaM-12-41 » On the denseness of minimum attaining operators (09/2018)
OaM-12-46 » Hyponormality of finite rank perturbations of normal operators (09/2018)
OaM-12-69 » Weyl's theorem and its perturbations for the functions of operators (12/2018)
OaM-13-28 » Compact perturbations of Drazin invertible operators (06/2019)
OaM-13-67 » Isolated eigenvalues, poles and compact perturbations of Banach space operators (12/2019)
OaM-14-06 » Inverse continuity of the numerical range map for Hilbert space operators (03/2020)
OaM-14-65 » Explicit Krein resolvent identities for singular Sturm-Liouville operators with applications to Bessel operators (12/2020)
OaM-15-28 » Closedness of ranges of unbounded upper triangular operator matrices (06/2021)
OaM-15-35 » A Bishop-Phelps-Bollobás type property for minimum attaining operators (06/2021)
OaM-15-74 » Unifying the treatment of indefinite and semidefinite perturbations in the subspace perturbation problem (09/2021)
OaM-16-17 » Expansive operators which are power bounded or algebraic (03/2022)
OaM-16-46 » k-quasi-A-paranormal operators in semi-Hilbertian spaces (09/2022)
OaM-17-57 » Some inequalities related to numerical radius and distance from scalar operators in Hilbert spaces (09/2023)
OaM-17-70 » The essential spectrum equalities of 2×2 unbounded upper triangular operator matrices (12/2023)
OaM-18-13 » Relative residual bounds for eigenvalues in gaps of the essential spectrum (03/2024)
JMI-18-10 » Non-linear Casazza-Kalton-Christensen-van Eijndhoven perturbation with applications (03/2024)