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Unicellular alga covered in silica. The photo of this diatom seen under an optical microsc...
A uniform polyhedron of type (5,6,6) in the kaleidoscope of the dodecahedron. You can se...
The facade of this church in Bergamo presents a frieze of type 22∞.
These decorations at the cemetery in Castellanza (Varese) can be thought as a frieze of ty...
A frieze of type 22∞ in a gipatsi (a typical bag of the Mozambican handicraft). Here you...
The flag of Japan is an example of a non-discrete group of symmetry (so, it is not a roset...
The Korean flag has a cyclic symmetry of type C1. If we don’t consider the colouring, we...
The flag of Great Britain has a cyclic symmetry of type D2. At first sight, it seems an ex...
A small stellated dodecahedron: the faces are 5-pointed stars and there are 5 of them arou...
