A short proof of Bing's characterization ofS³
classification
🧮 math.GT
keywords
bingcharacterizationproofshortballcompactconnectedevery
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We give a short proof of Bing's characterization of $S^3$: a compact, connected 3-manifold $M$ is $S^3$ if and only if every knot in $M$ is isotopic into a ball.
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