Knotted columns (ophitic) in the transept of Trento cathedral (13th century).
The group of symmetry of this set of arm-chairs (at the Louvre, in the reconstruction of t...
Calcareous techas of echinoderm made of a set of calcareous plates that form a kind of sti...
The decoration on this mirror is cyclic, of type C4, and it breaks the symmetry of the obj...
A frieze of type *∞∞ on a gate of the palace of the University, in via Festa del Perdo...
A frieze of type 2*∞ on a gate of the palace of the University, in via Festa del Perdono...
A frieze of type *∞∞ on a gate of the palace of the University, in via Festa del Perdo...
A set of 5 dice, shaped like the 5 regular polyhedra.The image appeared in the survey "Off...
