UREM-ULB :
Unité de Recherche sur l’Enseignement des Mathématiques

Source : John Baez sur Google+

« One of the modern masters of Islamic tiling patterns is Craig S. Kaplan, an expert on computer graphics. He’s gone beyond the classics by exploring what you can do on the sphere, as below ! He also draws these patterns on the hyperbolic plane. For more, see his webpage :»

http://www.cgl.uwaterloo.ca/ csk/projects/starpatterns/