2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/95341Mixed distributions are considered as a results of application of a linear operator, which maps mixing measures to mixed measures. The main result is a proof of continuity of this mixing operator. Corollaries for parametric families of distributions (usually considered in literature) are also discussed.4 pages Version 2: minor changes in language / corrected typosProbability46E27text