2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/59875Let T be a quasidiagonal operator on a separable Hilbert space. Then T is the norm limit of operators, each of which generate a finite dimensional C*-algebra, if and only if the C*-algebra generated by T is exact.Latex, 7pages, 2 trivial examples removedOperator Algebras46L05text