2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/136070We study atomic right-angled Artin groups -- those whose defining graph has no cycles of length less than five, and no separating vertices, separating edges, or separating vertex stars. We show that these groups are not quasi-isometrically rigid, but that an intermediate form of rigidity does hold. We deduce from this that two atomic groups are quasi-isometric iff they are isomorphic.Group TheoryMetric Geometry20F65; 20F69; 20F67; 05C25text