Numerical Radius Perserving Operators on B(H)
نویسندگان
چکیده
منابع مشابه
extend numerical radius for adjointable operators on Hilbert C^* -modules
In this paper, a new definition of numerical radius for adjointable operators in Hilbert -module space will be introduced. We also give a new proof of numerical radius inequalities for Hilbert space operators.
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We characterize those linear operators on triangular or diagonal matrices preserving the numerical range or radius.
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ژورنال
عنوان ژورنال: Proceedings of the American Mathematical Society
سال: 1995
ISSN: 0002-9939
DOI: 10.2307/2161132