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Knot theory is dealing with embedding of curves in manifolds of dimension 3. A knot is a single circle embedded in the affine space of dimension 3 as a smooth curve not crossing itself. Many knot invariants are known and can be used to distinguish knots.

3 votes

Knots and Dynamics. Recent breakthroughs?

IF you are willing to extend into "braid theory and dynamics", there is quite a bit of activity in the field of "topological fluid mechanics" in last decade. Some of this work is directed at determi …
Piyush Grover's user avatar
5 votes
1 answer
268 views

Do there exist any variational principles on the space of braids (or knots)?

This is very speculative question and I do not know where to start looking up the literature, or if what I am looking for is even mathematically possible/meaningful. Q: I am interested in finding out …
Piyush Grover's user avatar
8 votes

Tying knots via gravity-assisted spaceship trajectories

Yes, with some caveats. For an authoritative source, please see the monograph Koon et al. "Dynamical systems, the three-body problem and space mission design" The short story is that with 2 or more l …
Piyush Grover's user avatar