2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/70472A criterion is given which assures that two p-divisible groups X and Y over an algebraically closed field of characteristic p are isomorphic when their p-kernels X[p] and Y[p] are isomorphic.Accepted for publication in the Annals of MathematicsAlgebraic Geometry14L05, 14J10text