n-component links with zero linking number reduce to C_k-trivial form in at most n^2 crossing changes, with matching quadratic lower bounds independent of k.
Realization of Vassiliev invariants by unknot- ting number one knots.Tokyo J
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Gordian distance and clasper surgery for links
n-component links with zero linking number reduce to C_k-trivial form in at most n^2 crossing changes, with matching quadratic lower bounds independent of k.