Knotted columns

Knotted columns (ophitic) in the transept of Trento cathedral (13th century).

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An arm-chair C3

The group of symmetry of this set of arm-chairs (at the Louvre, in the reconstruction of t...

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A frieze 2*∞

On this floor, a frieze of type 2*∞.

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A frieze 2*∞

A frieze of type 2*∞ on this floor.

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A sea urchin

Calcareous techas of echinoderm made of a set of calcareous plates that form a kind of sti...

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A mirror C4

The decoration on this mirror is cyclic, of type C4, and it breaks the symmetry of the obj...

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A frieze *22∞

A frieze of type *∞∞ on a gate of the palace of the University, in via Festa del Perdo...

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A frieze 2*∞

A frieze of type 2*∞ on a gate of the palace of the University, in via Festa del Perdono...

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A frieze *∞∞

A frieze of type *∞∞ on a gate of the palace of the University, in via Festa del Perdo...

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Dice

A set of 5 dice, shaped like the 5 regular polyhedra.The image appeared in the survey "Off...

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