2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/74982We compute the asymptotic dimension of the rationals given with an invariant proper metric. Also, we show that a countable torsion abelian group taken with an invariant proper metric has asymptotic dimension zero.9 pages, 1 figure, AMSTeXGroup TheoryGeometric Topology20F69On asymptotic dimension of countable abelian groupstext