2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/121584In this paper, we study additive coalescents. Using their representation as fragmentation processes, we prove that the law of a large class of eternal additive coalescents is absolutely continuous with respect to the law of the standard additive coalescent on any bounded time interval.Probability60J25 60G09text