Weak closure of the unitary orbit of contractions

DOI10.1007/BF01955737zbMath0593.47032MaRDI QIDQ1076317

Mahmoud Kutkut

Publication date: 1985

Published in: Acta Mathematica Hungarica (Search for Journal in Brave)

zbMATH Keywords

numerical rangeessential spectrumunitary orbitcontractive weighted shiftset of all contractions

Mathematics Subject Classification ID

Numerical range, numerical radius (47A12) Linear operators on special spaces (weighted shifts, operators on sequence spaces, etc.) (47B37) Spectral sets of linear operators (47A25)

Related Items (1)

Divisible operators in von Neumann algebras

Cites Work

• Eine Spektraltheorie für allgemeine Operatoren eines unitären Raumes. Erhard Schmidt zum 75. Geburtstag in Verehrung gewidmet
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