Do conventional knots of linear strands in three dimensions have an analog which utilizes closed planar surfaces to form "knots" within four dimensional space, or in general closed N-dimensional manifolds to form "knots" within (N+2) dimensional space?(adsbygoogle = window.adsbygoogle || []).push({});

Perhaps they could have applications to superstrings.

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# Planar knots in 4-D

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