Poincaré conjecture
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English
[edit]
Etymology
[edit]Originally conjectured by Henri Poincaré.
Proper noun
[edit]the Poincaré conjecture
- The theorem that the only simply connected, closed 3-dimensional manifold is a sphere.
Usage notes
[edit]- This is still (2008) known as the Poincaré conjecture but is now a theorem rather than a conjecture.