QUICK FACTS
Milestone: Poincaré conjecture solved
When: Nov. 11, 2002
Where: St. Petersburg, Russia
Who: Grigori Perelman
On a cold day in November, a man living quietly in Russia posted a paper to a public server.
Science history: Russian mathematician quietly publishes paper — and solves one of the most famous unsolved conjectures in mathematics — Nov. 11, 2002
