2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/69935The paper is an extended version of the talk in the Logic Colloquium-2000 at Paris. We discuss a series of results and problems around Hrushovski's construction of counter-examples to the Trichotomy conjecture.Latex, 18 pagesLogic03CAnalytic and pseudo-analytic structures (a survey)text