2 problems

Let $n\geq 3$, and let $\ell_1^n$ be the $n$-dimensional operator space. A finite-dimensional operator space is controllable when it satisfies the controllability property defined…

Let $\mathscr{C}=C^*(\mathbb{F}_\infty)$, and let a finite-dimensional operator subspace $E\subset\mathscr{C}$ be controllable when it is completely isometric to a subspace having…