Conditions for the finiteness of the singular spectrum in the self- adjoint Friedrichs model

DOI10.1007/BF01077344zbMath0724.47010OpenAlexW2012673869MaRDI QIDQ757801

S. I. Yakovlev, Serguei Naboko

Publication date: 1990

Published in: Functional Analysis and its Applications (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/bf01077344

zbMATH Keywords

singular spectrumperturbed operators in the Friedrichs model

Mathematics Subject Classification ID

Riesz operators; eigenvalue distributions; approximation numbers, (s)-numbers, Kolmogorov numbers, entropy numbers, etc. of operators (47B06) Spectrum, resolvent (47A10) Perturbation theory of linear operators (47A55) Integral operators (45P05)

Related Items (1)

Uniqueness theorem and singular spectrum in the Friedrichs model near a singular point

Cites Work

• Uniqueness theorems for operator-valued functions with positive imaginary part, and the singular spectrum in the selfadjoint Friedrichs model
• The singular spectrum of the weakly perturbed multiplication operator
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