Location: Is all about Math


author: Jos Leys
author: Étienne Ghys, National Center for Scientific Research (CNRS)
author: Aurélien Alvarez, École Normale Supérieure de Lyon
published: March 15, 2010,   recorded: July 2008,   views: 3009

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The mathematician Heinz Hopf describes his "fibration". Using complex numbers he builds beautiful arrangements of circles in space.

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