Simple random triangulation of the surface of a 'crumpled' torus -18x18- [Triangulation simplement aléatoire de la surface d'un tore 'froissé' -18x18-].
See the definition of the 'crumpled' torus:
See some related pictures (including this one):
(CMAP28 WWW site: this page was created on 06/13/2015 and last updated on 07/15/2018 11:44:15 -CEST-)