Casanovas Ruiz-Fornells, EnriquePotier, JorisUniversitat de Barcelona. Departament de Lògica, Història i Filosofia de la Ciència2016-09-292016-09-292015-06-08https://hdl.handle.net/2445/102249[eng] The core of this PhD dissertation is basically twofold : On one hand, I get some new results on the relationship between compact groups and bounded hyperimaginaries, extending a little bit the classical results of Lascar and Pillay in Hyperimaginaries And Automorphism Groups. On the other hand, I prove some new results around the so called "stable forking" property, more specifically that a simple theory T has stable forking if Teq has. Quite surprisingly, the proof is not so straigtforward.[spa] En este texto se trata, por una parte, de la relación entre grupos compactos e hiper-imaginarios acotados, y por otra parte se prueba que una teoría T tiene la propiedad de bifurcación estable si i solo si Teq la tiene.124 p.application/pdfengcc-by-sa, (c) Potier,, 2015http://creativecommons.org/licenses/by-sa/3.0/LògicaTopologiaCategories (Matemàtica)Teoria de modelsTeoria de conjuntsLogicTopologyCategories (Mathematics)Model theorySet theoryinfo:eu-repo/semantics/doctoralThesis2016-09-29info:eu-repo/semantics/openAccesshttp://hdl.handle.net/10803/394029