Numerical Radius Perserving Operators on B(H)

Jor-Ting Chan
1995 Proceedings of the American Mathematical Society  
Let H be a Hubert space over C and let B(H) denote the vector space of all bounded linear operators on H.
doi:10.2307/2161132 fatcat:s5qmvbgf2zhzlgypljfiqg6hwm