Stephen Smale is an American mathematician and winner of the
Fields Medal. In 1998 he constructed a list of 18 problems in
mathematics to be solved in the 21st century. This list was compiled in the spirit of
Hilbert's famous list of problems produced in 1900. In fact, Smale's list includes some of the original Hilbert problems. Smale's problems include the
Jacobian conjecture[?] and the
Riemann hypothesis, both of which are still unsolved.
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