Torus illustration.png
Complément d'un nœud
The knot complement of the unknot is homeomorphic to a solid torus - notice that while the unknot itself can be represented as a torus, the hole in the unknot corresponds to the solid region of the complement, while the knot itself is the hole in the complement. This is connected to the trivial Heegaard decomposition of the 3-sphere into two solid tori.
Knoopcomplement
Доповнення вузла
Blue Unknot.png
complement of a knot in three-sphere
Knot complement
center
простір, де вузол відсутній
Knotenkomplement
Green solid torus
結び目補空間
Blue unknot
komplemento de nodo en tridimensia sfero