2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/164382In order to apply nonstandard methods to modern algebraic geometry, as a first step in this paper we study the applications of nonstandard constructions to category theory. It turns out that many categorial properties are well behaved under enlargements.34 pagesCategory Theory03H05,18A30,18E30,14A99text