On finiteness conditions for the point spectrum in the nonself-adjoint Friedrichs model

DOI10.1007/BF02466066zbMath1126.47302OpenAlexW1966978498MaRDI QIDQ1272021

S. A. Stepin

Publication date: 7 April 1999

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

Full work available at URL: https://doi.org/10.1007/bf02466066

Mathematics Subject Classification ID

Spectrum, resolvent (47A10) Perturbation theory of linear operators (47A55) Linear symmetric and selfadjoint operators (unbounded) (47B25) Perturbation theories for operators and differential equations in quantum theory (81Q15)

Cites Work

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