Discrete spectrum in gaps of the spectrum under strong perturbations of fixed sign

DOI10.1090/TRANS2/199/05zbMATH Open1287.47012OpenAlexW4236136755MaRDI QIDQ3533316

V. A. Sloushch

Publication date: 23 October 2008

Published in: (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1090/trans2/199/05

Mathematics Subject Classification ID

Spectrum, resolvent (47A10) Perturbation theory of linear operators (47A55) Linear symmetric and selfadjoint operators (unbounded) (47B25)

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