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2 votes
1 answer
248 views

Wrapping a suitcase with large rotational symmetry

This is a follow-up question to Can I wrap a suitcase with hair ties. Now we know that it is possible to wrap a suitcase with hair ties without tying them together, but can you do it with large ...
Anton Petrunin's user avatar
50 votes
2 answers
2k views

Can I wrap a suitcase with hair ties

Is there a nontrivial link in a big solid torus that is trivial in the ambient Euclidean space such that each circle is unknot and has a sufficiently small length? It is motivated by a question that ...
Anton Petrunin's user avatar