Dikranjan, DikranProtasov, IgorProtasova, KseniaZava, Nicolò2019-10-032019-10-032019-10-011576-9402https://riunet.upv.es/handle/10251/127140[EN] A ballean B (or a coarse structure) on a set X is a family of subsets of X called balls (or entourages of the diagonal in X × X) dened in such a way that B can be considered as the asymptotic counterpart of a uniform topological space. The aim of this paper is to study two concrete balleans dened by the ideals in the Boolean algebra of all subsets of X and their hyperballeans, with particular emphasis on their connectedness structure, more specically the number of their connected components.Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)BalleansCoarse structureCoarse mapAsymorphismBalleans defined by idealsHyperballeansArtículo2019-10-0310.4995/agt.2019.11645Abierto1989-4147