Every simply connected, closed 3manifold is homeomorphic to the 3sphere. Stated above is what mathematical problem named for a Frenchman that defied experts for a century before it was solved by Grigori Perelman in 2006?
Answer: PoincarĂ© conjecture
The left column contains Web search results. The right column contains question entity pages from Wikipedia.
Web search results  Question entity pages 

Ambarish  a student of life: Grigori Perelman World's top ...
... maths world when he solved a centuryold puzzle ... "Every simply connected closed 3manifold is homeomorphic to a 3sphere." Dr Perelman proved ...

3manifold  Wikipedia

School of Mathematical Sciences
... School of Mathematical ... Grigori Perelman gave a spectacular proof of the Poincare Conjecture (every smooth compact simply connected three ...

3sphere  Wikipedia


Grigori Perelman  Wikipedia
