The $L^2$-Cartesian Numerical Radii of Hilbert Space Operators

Wasim Audeh, Fuad Kittaneh, Hamid Reza Moradi +1

Let $\mathcal{H}$ be a complex Hilbert space, and let $T=H+iK\in \mathcal{B}(\mathcal{H})$ be the Cartesian decomposition of $T$, where $H=H^{\ast }$ and $K=K^{\ast }$. We introduce the $L^…