Turning a Sphere Inside Out
This video is about the problem of turning a sphere inside out, by passing the surface through itself, without making any holes or creases. Mathematicians believed the problem to be unsolvable until 1958, when Stephen Smale proved otherwise. The motion of turning a sphere inside out, called a regular homotopy, is extre...
Top Cast
Nelson Max
Self
Stephen Smale
Self
Charles Pugh
Self
Judith Bregman
Self
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