2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/74143Let r be a real number, 0<r<1, given as a dual number. With the sequence of "0", "1" we define a path in a hexagonal lattice. Relations between the properties of r and its path are considered. Generalisations to other bases and lattices.4 pages, 1 figure, germanGeneral Mathematics00A99text