PROFESSION:  mathematician

TRAVELS:  Author of Smale's paradox, which In differential topology, states that it is possible to turn a sphere inside out in a three-dimensional space with possible self-intersections but without creating any crease, a process more commonly and historically called sphere eversion (eversion means "turning inside out"). This is surprising, to those who understand regular homotopy, and is hence deemed a veridical paradox.

RELATED TITLES: