%0 Journal Article %T Sur les ensembles d'entiers reconnaissables %A Fabien Durand %J Mathematics %D 2008 %I arXiv %X Let U and V be two Bertrand numeration systems, and, a and b the two Parry numbers there are naturally associated with. Suppose they are multiplicatively independent. We prove that, if E is a subset of positive integers which is both U and V recognizable, then E is a finite union of arithmetical progressions. %U http://arxiv.org/abs/0801.0556v1