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Tag Archives: Alexander horned sphere
Bing’s wild involution
An embedded circle separates the sphere into two connected components; this is the Jordan curve theorem. A strengthening of this fact, called the Jordan-Schoenflies theorem, says that the two components are disks; i.e. every embedded circle in the sphere bounds a … Continue reading
Posted in 3-manifolds, Uncategorized
Tagged Alexander horned sphere, Bing, wild involution
4 Comments
Geometry and the imagination 