2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/152890In section 1 of this paper, we characterize the isomorphism property of nonstandard universes in terms of the realization of some second--order types in model theory. In section 2, several applications are given. One of the applications answers a question of D. Ross about infinite Loeb measure spacesLogictext