Kompakte Störungen nichtisolierter Eigenwerte endlicher Vielfachheit

DOI10.1002/mana.19740590122zbMath0274.47009OpenAlexW2033145636MaRDI QIDQ5182707

Hellmut Baumgärtel

Publication date: 1974

Published in: Mathematische Nachrichten (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1002/mana.19740590122

Mathematics Subject Classification ID

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

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