Because the knot homology theories are TQFTs!
This definition is taken from [1]:
Knot homology theories are (1+1)-dimensional TQFTs: links are 1-manifolds, and cobordisms between them are 2-manifolds.
Because the knot homology theories are TQFTs!
This definition is taken from [1]:
Knot homology theories are (1+1)-dimensional TQFTs: links are 1-manifolds, and cobordisms between them are 2-manifolds.