2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/152824The purpose of this article is to indicate how a reformulation of Jensen's $Σ^*$ theory (developed for the study of core models) can be used to provide a more satisfactory treatment of uniformization, hulls and Skolem functions for the $J_α$'s. Then we use this approach to fine structure to formulate a principle intended to capture the combinatorial content of the axiom $V=L.$Logictext