Entanglement
In knot theory , a branch of mathematics , an entanglement (also a link or concatenation ) is a set of knots that do not intersect, but that can be intertwined.
The projection of a link onto a plane is known as a link diagram .
The mathematician Carl Friedrich Gauß found the link number to be one of the first invariants for links.
Examples
Web links
Commons : Links (knot theory) - collection of images, videos and audio files