Hopf fibration

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Science and technology

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What Wikipedia says

In differential topology, the Hopf fibration (also known as the Hopf bundle or Hopf map) describes a 3-sphere (a hypersphere in four-dimensional space) in terms of circles and an ordinary sphere. Discovered by Heinz Hopf in 1931, it is an influential early example of a fiber bundle.

Excerpt from the Wikipedia article “Hopf fibration”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Niles Johnson, CC BY 4.0, via Wikimedia Commons.