Marcoux, Laurent2024-01-312024-01-312020https://doi.org/10.7900/jot.2018nov07.2234http://hdl.handle.net/10012/20318It is still an open question to know whether or not every quasidiagonal operator can be expressed as a norm-limit of algebraic quasidiagonal operators. In this note, we provide an alternative characterization of those operators which may be expressed as such limits, in the hope that this may lead to a solution of this problem.enquasidiagonalalgebraic operatorsnilpotent operatorsapproximationArticle