2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/18442The problem of defining a statistical ensemble of random graphs with an arbitrary connectivity distribution is discussed. Introducing such an ensemble is a step towards uderstanding the geometry of wide classes of graphs independently of any specific model. This research was triggered by the recent interest in the so-called scale-free networks.11 latex pages, 4 eps figures, talk at the workshop "Discrete random geometries and quantum gravity", Utrecht, October 2001, cosmetic correctionsStatistical MechanicsDisordered Systems and Neural Networkstext