If we roll up a frieze with a scheme of symmetry of type ∞∞, we get a cylinder.
foto di Ombretta Locatelli
The image belongs to the sections...:
Exhibition 2004-2005 together with the topology section of matemilano (From the exhibitions of matematita)
The topology section of matemilano shown inside the exhibition Symmetry, playing with mirrors (From the exhibitions of matematita)