Source: wikibot/grigori-perelman

= Grigori Perelman
{wiki=Grigori_Perelman}

Grigori Perelman is a Russian mathematician known for his groundbreaking work in geometry and topology. He gained international fame for providing a solution to the Poincaré Conjecture, one of the seven Millennium Prize Problems for which the Clay Mathematics Institute offered a prize of one million dollars for a correct solution. The Poincaré Conjecture, formulated by Henri Poincaré in 1904, deals with the characterization of three-dimensional spheres among three-dimensional manifolds.