Almost normal operators, their spectra and invariant subspaces

DOI10.1090/S0002-9904-1973-13241-0zbMath0267.47016OpenAlexW2008576767MaRDI QIDQ5683825

C. R. Putnam

Publication date: 1973

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

Full work available at URL: https://doi.org/10.1090/s0002-9904-1973-13241-0

Mathematics Subject Classification ID

Hermitian and normal operators (spectral measures, functional calculus, etc.) (47B15) Riesz operators; eigenvalue distributions; approximation numbers, (s)-numbers, Kolmogorov numbers, entropy numbers, etc. of operators (47B06) Spectrum, resolvent (47A10) Subnormal operators, hyponormal operators, etc. (47B20) Invariant subspaces of linear operators (47A15) Commutators, derivations, elementary operators, etc. (47B47)

Related Items

Pseudospectrum of an element of a Banach algebra, Unnamed Item, Everything is possible for the domain intersection dom \(T \cap\) dom \(T^\ast\), Invariant subspaces in the theory of operators and theory of functions, Spectrum and related sets: a survey, Almost Isolated Spectral Parts and Invariant Subspaces, \(G_1\)-class elements in a Banach algebra

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