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Apr 13, 2017 at 12:58 history edited CommunityBot
replaced http://mathoverflow.net/ with https://mathoverflow.net/
Sep 6, 2014 at 16:04 comment added Steve Huntsman Here is a very coarse physical characterization: knots can arise via entropic forces, and are hard to untangle by the second law.
Sep 6, 2014 at 10:26 comment added Sam Nead Interesting question. Your question is more likely to get an interesting answer (especially here on MO) if you can find a sharper definition of "capsizing". (Inversion in knot theory already has a standard meaning.) My immediate thought is that capsizing looks a bit like the Reidemeister move $R_\infty$ - "pushing past infinity".
Sep 5, 2014 at 23:04 history edited user21349 CC BY-SA 3.0
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Sep 5, 2014 at 21:48 history asked user21349 CC BY-SA 3.0