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embedding
Which compact boundaryless 3-manifolds embed smoothly in the 4-sphere? โ โ โ
Author(s): Kirby
Problem Determine a computable set of invariants that allow one to determine, given a compact boundaryless 3-manifold, whether or not it embeds smoothly in the 4-sphere. This should include a constructive procedure to find an embedding if the manifold is embeddable.
Keywords: 3-manifold; 4-sphere; embedding
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