Stephen Smale
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Stephen Smale is an American mathematician, known for his research in topology, dynamical systems and mathematical economics. He was awarded the Fields Medal in 1966 and spent more than three decades
Smale in 2008
Morris Hirsch
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Morris William Hirsch is an American mathematician, formerly at the University of California, Berkeley.
Stephen Smale
…immersions) into its negation, which is now known as sphere eversion. He also extended his results to higher-dimensional spheres, and his doctoral student Morris Hirsch extended his work to immersions of general smooth manifolds. Along with John Nash's work on isometric immersions, the Hirsch–Smale immersion theory was…
Hirsch in Berkeley, 1986