How many crossing changes or Delta-moves does it take to get to a homotopy trivial link?

Anthony Bosman, Christopher William Davis, Taylor Martin +2

The homotopy trivializing number, \(n_h(L)\), and the Delta homotopy trivializing number, \(n_Δ(L)\), are invariants of the link homotopy class of \(L\) which count how many crossi…