Mathematician:Grigori Yakovlevich Perelman

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Russian mathematician famous for solving Thurston's Geometrization Conjecture, and hence completing the proof of the Poincaré Conjecture.




  • Born: 13 June 1966 in Leningrad, USSR (now St. Petersburg, Russia)

Theorems and Definitions


  • 1990: Седловые поверхности в евклидовых пространствах:Автореф. дис. на соиск. учен. степ. канд. физ.-мат. наук. Ленинградский Государственный Университет. (Ph.D. dissertation)
  • 1992: Aleksandrov spaces with curvatures bounded below (with Yu. Burago and M. Gromov)
  • 1993: Construction of manifolds of positive Ricci curvature with big volume and large Betti numbers
  • 1994: Proof of the soul conjecture of Cheeger and Gromoll
  • 1994: Elements of Morse theory on Aleksandrov spaces
  • 1994: Extremal subsets in Alexandrov spaces and the generalized Liberman theorem (with A.M. Petrunin)
  • 11 November 2002: The entropy formula for the Ricci flow and its geometric applications
  • 10 March 2003: Ricci flow with surgery on three-manifolds
  • 17 July 2003: Finite extinction time for the solutions to the Ricci flow on certain three-manifolds

Also known as

In Russian: Григорий Яковлевич Перельман.

Usually known by his diminutive Grisha.