Borromean rings
Videos
In mathematics, the Borromean rings are three simple closed curves in three-dimensional space that are topologically linked and cannot be separated from each other, but that break apart into two unkno
A monkey's fist knot
House of Borromeo
Videos
The House of Borromeo is an Italian noble family. They started as merchants in San Miniato around 1300 and became bankers in Milan after 1370. Vitaliano de' Vitaliani, who acquired the name of Borrome
Borromean rings
…Borromean rings as long as they are topologically equivalent to the curves depicted in this drawing. The Borromean rings are named after the Italian House of Borromeo, who used the circular form of these rings as an element of their coat of arms, but designs based on the Borromean rings have been used in many cultures…
The Borromeo Palace at Milan
Lake Maggiore, with the Borromean Islands, the majority still owned by the family, although now open to the public.
Castle Rocca di Angera
Palace on Isola Bella