On minimal norms on $M_n$

Madjid Mirzavaziri, Mohammad Sal Moslehian

In this note, we show that for each minimal norm $N(\cdot )$ on the algebra $M_n$ of all $n\times n$ complex matrices, there exist norms $\Vert \cdot {\Vert }_1$ and $\Vert \cdot {\Vert }_2$ on ${\mathb…