Description of the structure of singular spectrum for Friedrichs model operators near singular point.

DOI10.1155/S0161171201011668zbMath1040.47003MaRDI QIDQ1599612

Serguei I. Iakovlev

Publication date: 2001

Published in: International Journal of Mathematics and Mathematical Sciences (Search for Journal in Brave)

Full work available at URL: https://eudml.org/doc/50814

zbMATH Keywords

densitypoint spectrumsingular spectrumsingular continuous spectrum

Mathematics Subject Classification ID

Riesz operators; eigenvalue distributions; approximation numbers, (s)-numbers, Kolmogorov numbers, entropy numbers, etc. of operators (47B06) Spectrum, resolvent (47A10) Linear symmetric and selfadjoint operators (unbounded) (47B25)

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