2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/215470The aim of this note is to give an easy example of a finitely presented group that cannot act without a fix point on a CAT(0) space of finite dimension. Such an example has been recently constructed by Arjantseva et al., using other techniques12 pages; to appear in Journal of Topology and AnalysisGroup Theorytext