2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/66918We consider what Ext(A,Z) can be when A is torsion-free and Hom(A,Z)=0. We thereby give an answer to a question of Golasinski and Goncalves which asks for the divisible Abelian groups which can be the type of a co-Moore space.LogicGroup Theorytext