“Every simply connected, closed 3-manifold is homeomorphic to the 3-sphere.” — The Poincaré Conjecture.
“Every simply connected, closed 3-manifold is homeomorphic to the 3-sphere.”
- The Poincaré Conjecture photo credit : https://bit.ly/2KDYLoC
If we stretch a rubber band around the surface of an apple, then we can shrink it down to a point by moving it slowly, without tearing it and without allowing…
Comments to: [email protected] Created: Tue Feb 11 7:10:27 CST 1997 — Last modified: Tue Feb 11 7:10:27 CST 1997.
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