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math.GT2019
A note on the weak splitting number
Alberto Cavallo, Carlo Collari, Anthony Conway
The weak splitting number of a link is the minimal number of crossing changes needed to turn into a split union of knots. We describe conditions under which certai…
math.GT2019
On symmetric equivalence of symmetric union diagrams
Carlo Collari, Paolo Lisca
Eisermann and Lamm introduced a notion of symmetric equivalence among symmetric union diagrams and studied it using a refined form of the Jones polynomial. We introduced invariants…