Semicontinuity of Nullity of Deficiency Implies Normability of the Space

DOI10.2307/2038275zbMath0226.46073OpenAlexW4253618237MaRDI QIDQ5633137

John M. Hosack

Publication date: 1971

Published in: Proceedings of the American Mathematical Society (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.2307/2038275

Mathematics Subject Classification ID

General theory of (C^*)-algebras (46L05) Representations of topological algebras (46H15) Topological algebras of operators (46H35) Linear operators in algebras (47C05)

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Invariants of certain Lie actions. Instability of the Fredholm character

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