2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/119320We give an example of an omega-categorical group without AZ-enumerations. We build AZ-enumerations of some omega-categorical central products of countably many copies of a finite 2-step nilpotent group.8 pages, AMSLaTeXLogicGroup Theory03C45 (Primary) 20F50 (Secondary)text