Capitals at the entrance of S.Ambrogio church in Milan, decorated with knots.
The tails of these animanls form an Hopf link on the capital of S. Ambrogio church, in Mil...
The knot represented in this grillwork has less symmetry than it could seem at first sight...
These windows in Corso Magenta in Milan are characterized by the scheme of the Borromean r...
