New numerical radius inequalities for certain operator matrices
Author
Bani-Domi, Watheq
Bani-Ahmad, Feras Ali
Full text
https://www.revistaproyecciones.cl/index.php/proyecciones/article/view/114510.4067/S0716-09172012000300007
Abstract
In this paper we prove some upper and lower bounds for the numerical radius of the off-diagonal part of 3 X 3 operator matrices and some bounds for the numerical radius inequalities of the general 3 X 3 operator matrix.