2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/62242This is the written version of a talk given in Bonn on September 11th, 2001 during a workshop on "Special structures in string theory". We report on joint work in progress with George Papadopoulos aimed at classifying the maximally supersymmetric solutions of the ten- and eleven-dimensional supergravity theories with 32 supercharges.8 pagesDifferential GeometryHigh Energy Physics - TheoryMathematical Physics83E50;53C27;53C35;53C80text