2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/58619This article surveys the mathematics of the cut and project method as applied to point sets, called here {\em model sets}. It covers the geometric, arithmetic, and analytical sides of this theory as well as diffraction and the connection with dynamical systems.28 pages, 1 figureMetric Geometry51F99text