21 citations · 46 across the 23 of their papers we have counts for
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math.GR2010
Homotopically equivalent simple loops on 2-bridge spheres in 2-bridge link complements (I)
Donghi Lee, Makoto Sakuma
In this paper and its two sequels, we give a necessary and sufficient condition for two essential simple loops on a 2-bridge sphere in a 2-bridge link complement to be homotopic in…
math.GT2010★ 21 cited
Epimorphisms between 2-bridge link groups: Homotopically trivial simple loops on 2-bridge spheres
Donghi Lee, Makoto Sakuma
We give a complete characterization of those essential simple loops on 2-bridge spheres of 2-bridge links which are null-homotopic in the link complements. By using this result, we…