2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/79962We compare several definitions for number-conserving cellular automata that we prove to be equivalent. A necessary and sufficient condition for \cas to be number-conserving is proved. Using this condition, we give a linear-time algorithm to decide number-conservation. The dynamical behavior of number-conserving \cas is studied and a classification that focuses on chaoticity is given.24 pages, 2 figuresCellular Automata and Lattice Gasestext