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Paper detail

Distance Two Links

In this paper, we characterize all links in the 3-sphere with bridge number at least three that have a bridge sphere of distance two. We show that a link L has a bridge sphere of distance at most two then it falls into at least one of three categories: (1) The exterior of L contains an essential meridional sphere. (2) L can be decomposed as a tangle product of a Montesinos tangle with an essential tangle in a way that respects the bridge surface and either the Montesinos tangle is rational or the essential tangle contains an incompressible, boundary-incompressible annulus. (3) L is obtained by banding from another link L' that has a bridge sphere of the same Euler characteristic as the bridge sphere for L but of distance 0 or 1.

preprint2013arXivOpen access
Ryan BlairMarion CampisiJesse JohnsonScott A. TaylorMaggy Tomova
math.GT
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Ryan BlairMarion CampisiJesse JohnsonScott A. TaylorMaggy Tomova

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