All Questions

Can a planar tangle have an infinite number of input disks? Some publications talk about cases with a finite number of input disks, while others do not say if it is finite or infinite. So, is it ...

Reidermeister's theorem states that the set of knots, modulo ambient isotopy, is isomorphic to the planar algebra generated by crossings, modulo Reidemeister moves. This planar algebra presentation is ...