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The trefoil knot is the simplest knot; here you can see the two versions (left and right) ...
A knot on the paving of the Galleria, in Milan.The image has been used at the exhibition m...
The diagram of a knot differs from a projection of the knot on a plane because every cross...
This map represents a map of 24 paired regions; a couple of regions is identified by the s...
These windows in Corso Magenta in Milan are characterized by the scheme of the Borromean r...
A decoration on the floor of the Galleria, in Milan. If we imagine ot paste the ends, we g...
A polyhedron that represents a surface of genus 1 (a torus), that can be thought as a doug...
Two simply tied circumferences, namely the Hopf link. The image has been realized with the...
Two double-tied circumpherences (the Solomon's knot). See also a diagram of the same knot...
The figure eight knot (also called the savoia knot) is the simplest knot after the trefoil...
