Isometries of a Generalized Numerical Radius on Compact Operators

DOI10.1016/J.LAA.2014.02.040arXiv1310.5155MaRDI QIDQ6245757

Vladimir G. Pestov, Maria Inez Cardoso Gonçalves

Publication date: 18 October 2013

Abstract: We describe all isometries of the $q$-numerical radius on the space $mathcalK(mathcalH)$ of compact operators on a (possibly infinite-dimensional) Hilbert space $mathcalH$.

Mathematics Subject Classification ID

Numerical range, numerical radius (47A12) Operators on Hilbert spaces (general) (47B02)

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