2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/68811We give an explicit formula for Whitehead group of a three-dimensional crystallographic group in terms of the Whitehead groups of its virtually infinite cyclic subgroups.K-Theory and HomologyAlgebraic TopologyA formula for the Whitehead group of a three-dimansional crystallographic grouptext