Numerical radius preserving operators on
Author:
JorTing Chan
Journal:
Proc. Amer. Math. Soc. 123 (1995), 14371439
MSC:
Primary 47A12; Secondary 47B49
MathSciNet review:
1231293
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Abstract: Let H be a Hilbert space over and let denote the vector space of all bounded linear operators on H. We prove that a linear isomorphism is numerical radiuspreserving if and only if it is a multiply of a isomorphism by a scalar of modulus one.
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Additional Information
DOI:
http://dx.doi.org/10.1090/S00029939199512312937
PII:
S 00029939(1995)12312937
Article copyright:
© Copyright 1995 American Mathematical Society
