par Hartley, Michael I.;Leemans, Dimitri
Référence Innovations in Incidence Geometry, 1, 1, page (181-190)
Publication Publié, 2005
Article révisé par les pairs
Résumé : The Janko group J1 acts regularly on six rank four thin residually connected geometries. Two of them are polytopes of type {5, 3, 5} and {5, 6, 5}. In this paper, we show that starting from the {5, 3, 5} polytope, the five other thin geometries may be constructed in a simple manner.