On the geometry of the unit ball of unitary matrix spaces

DOI10.1007/BF01702378zbMath0459.47029MaRDI QIDQ1152089

Jonathan Arazy

Publication date: 1981

Published in: Integral Equations and Operator Theory (Search for Journal in Brave)

zbMATH Keywords

exposed pointsextreme pointssmooth pointsunitary matrix spacessymmetric sequence spacessingular numbers of operators

Mathematics Subject Classification ID

Normed linear spaces and Banach spaces; Banach lattices (46B99) Linear operators belonging to operator ideals (nuclear, (p)-summing, in the Schatten-von Neumann classes, etc.) (47B10) Convex sets and cones of operators (47L07)

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