2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/60288Spin networks are at the core of quantum gravity. Our aim is to plug the mathematical community at large into the procedures turn to create a finite quantum theory of general relativity. For this, because of the different cultural backgraund, we would like to change the tack: to relate discrete (combinatorial) objects to the standard "contineous" geometry.Latex2e, 20 pages without figuresDifferential GeometryAlgebraic Geometrytext