2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/70726The aim of this note is to show that weak relative hyperbolicity of a group relative to a subgroup (or relative hyperbolicity in the sense of Farb) does not imply any natural analogues of some well-known algebraic properties of ordinary hyperbolic groups. Our main tools are combination theorems for weakly relatively hyperbolic groups.9 pages; to appear in Contemp. MathGroup Theory20F65; 20F67; 20F69text