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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