2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/104996We look at geometrical and arithmetical patterns created from a finite subset of Z^n by diffracting waves and bipartite graphs. We hope that this can make a link between Motives and the Melting Crystals/Dimer models in String Theory.19 pages, 1 ps-picture, latex 2e, to appear in Proceedings of EAGER conference, Leiden, september 2004Number TheoryHigh Energy Physics - Theory11G99text