2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/80948Two simple Cellular Automata, which mimic the Collatz-Ulam iterated map (3x+1 map), are introduced. These Cellular Automata allow to test efficiently the Collatz conjecture for very large numbers.10 pages, 5 figuresCellular Automata and Lattice Gasestext