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Boundary Structure of Hyperbolic $3$-Manifolds Admitting Annular and Toroidal Fillings at Large Distance

  Published:2008-02-01
 Printed: Feb 2008
  • Sangyop Lee
  • Masakazu Teragaito
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Abstract

For a hyperbolic $3$-manifold $M$ with a torus boundary component, all but finitely many Dehn fillings yield hyperbolic $3$-manifolds. In this paper, we will focus on the situation where $M$ has two exceptional Dehn fillings: an annular filling and a toroidal filling. For such a situation, Gordon gave an upper bound of $5$ for the distance between such slopes. Furthermore, the distance $4$ is realized only by two specific manifolds, and $5$ is realized by a single manifold. These manifolds all have a union of two tori as their boundaries. Also, there is a manifold with three tori as its boundary which realizes the distance $3$. We show that if the distance is $3$ then the boundary of the manifold consists of at most three tori.
Keywords: Dehn filling, annular filling, toroidal filling, knot Dehn filling, annular filling, toroidal filling, knot
MSC Classifications: 57M50, 57N10 show english descriptions Geometric structures on low-dimensional manifolds
Topology of general $3$-manifolds [See also 57Mxx]
57M50 - Geometric structures on low-dimensional manifolds
57N10 - Topology of general $3$-manifolds [See also 57Mxx]
 

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