2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/60558We introduce a general method of extending (pseudo-)metrics from X to FX, where F is a normal functor on the category of metrizable compacta. For many concrete instances of F, our method specializes to the known constructions.6 pages. A revised version (minor corrections) of a published article, whose original text is difficult to obtainGeneral TopologyCategory Theory54C20; 54E35text