2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/59653An A-loop is a loop in which every inner mapping is an automorphism. We settle a problem which had been open since 1956 by showing that every diassociative A-loop is Moufang.7 pages, to appear in Proc. Amer. Math. Soc. Version 2 includes additional remarks about the automated theorem prover OTTERGroup Theory20N05; 68T15text