On Norm of Elementary Operator: An Application of Stampfli’s Maximal Numerical Range
Denis Njue Kingangi · Pure and Applied Mathematics Journal · 2018
Many researchers in operator theory have attempted to determine the relationship between the norm of an elementary operator of finite length and the norms of its coefficient operators. Various results have been obtained using varied approaches. In this paper, we attempt this problem by the use of the Stampfli’s maximal numerical range.