A note on knots with H(2)-unknotting number one

Details A note on knots with H(2)-unknotting number one A note on knots with H(2)-unknotting number one

2010-09-17

arxiv.org/abs/1009.3411v1

Mathematics

Geometric Topology

6 pages, 4 figures

Scientific paper

We give an obstruction to unknotting a knot by adding a twisted band, derived
from Heegaard Floer homology.

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