2 problems

Let $I$, $A$, and $B$ be $C^*$-algebras in a short exact sequence … Assume that $I$ and $B$ are separable, nuclear, and quasidiagonal. Extension quasidiagonality conjecture. Then…

Let $A$ be a $C^*$-algebra. Blackadar–Kirchberg conjecture. If $A$ is separable, stably finite and nuclear, then $A$ is quasidiagonal. This conjecture concerns the converse to the…