Grigori Yakovlevich Perelman (13 juin 1966 – 18 h 5 min, 21 juin 2025 ans)

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Russian mathematician who is known for his contributions to the field of geometry and for his work on the Poincaré conjecture. Perelman was awarded the Fields Medal in 2006 for his work on the conjecture, which states that every simply connected, closed three-dimensional manifold is topologically equivalent to the three-dimensional sphere. Perelman's proof of the conjecture relied on the use of advanced mathematical techniques, including the theory of Ricci flow and the analysis of geometric structures known as Alexandrov spaces.

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