Hopf Links
The family of tori depicted in Pendulum
Tori is the basis for the Hopf fibration of the three-sphere by
linked circles. The 1-1 curves on any of these tori are linked.
Moreover, the 1-1 curves on any two of these tori also are linked. The
collection of these 1-1 curves form the Hopf fibration.
Here we see a torus (one near the center of one of the solid tori)
projected into three space as a small red torus. Another torus near the
center of the other solid torus is projected to a large green torus (it
provides the green background and the slender pillar down the middle). The
blue bands represent several 1-1 bands on an intermediate torus. Note
that they are linked with each other, as well as with the red and green
tori.
This image appeared in Beyond the Third Dimension.
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