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Transactions of the American Mathematical Society

Published by the American Mathematical Society since 1900, Transactions of the American Mathematical Society is devoted to longer research articles in all areas of pure and applied mathematics.

ISSN 1088-6850 (online) ISSN 0002-9947 (print)

The 2020 MCQ for Transactions of the American Mathematical Society is 1.48.

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Dehn fillings of knot manifolds containing essential once-punctured tori
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by Steven Boyer, Cameron McA. Gordon and Xingru Zhang PDF
Trans. Amer. Math. Soc. 366 (2014), 341-393 Request permission

Abstract:

In this paper we study exceptional Dehn fillings on hyperbolic knot manifolds which contain an essential once-punctured torus. Let $M$ be such a knot manifold and let $\beta$ be the boundary slope of such an essential once-punctured torus. We prove that if Dehn filling $M$ with slope $\alpha$ produces a Seifert fibred manifold, then $\Delta (\alpha ,\beta )\leq 5$. Furthermore we classify the triples $(M; \alpha ,\beta )$ when $\Delta (\alpha ,\beta )\geq 4$. More precisely, when $\Delta (\alpha ,\beta )=5$, then $M$ is the (unique) manifold $Wh(-3/2)$ obtained by Dehn filling one boundary component of the Whitehead link exterior with slope $-3/2$, and $(\alpha , \beta )$ is the pair of slopes $(-5, 0)$. Further, $\Delta (\alpha ,\beta )=4$ if and only if $(M; \alpha ,\beta )$ is the triple $\displaystyle (Wh(\frac {-2n\pm 1}{n}); -4, 0)$ for some integer $n$ with $|n|>1$. Combining this with known results, we classify all hyperbolic knot manifolds $M$ and pairs of slopes $(\beta , \gamma )$ on $\partial M$ where $\beta$ is the boundary slope of an essential once-punctured torus in $M$ and $\gamma$ is an exceptional filling slope of distance $4$ or more from $\beta$. Refined results in the special case of hyperbolic genus one knot exteriors in $S^3$ are also given.
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Additional Information
  • Steven Boyer
  • Affiliation: Département de Mathématiques, Université du Québec à Montréal, 201 avenue du Président-Kennedy, Montréal, Québec, Canada H2X 3Y7
  • MR Author ID: 219677
  • Email: boyer.steven@uqam.ca
  • Cameron McA. Gordon
  • Affiliation: Department of Mathematics, University of Texas at Austin, 1 University Station, Austin, Texas 78712
  • MR Author ID: 75435
  • Email: gordon@math.utexas.edu
  • Xingru Zhang
  • Affiliation: Department of Mathematics, SUNY at Buffalo, Buffalo, New York 14214-3093
  • MR Author ID: 346629
  • Email: xinzhang@buffalo.edu
  • Received by editor(s): November 8, 2011
  • Received by editor(s) in revised form: March 23, 2012
  • Published electronically: June 10, 2013
  • Additional Notes: The first author was partially supported by NSERC grant RGPIN 9446-2008
    The second author was partially supported by NSF grant DMS-0906276.
  • © Copyright 2013 American Mathematical Society
    The copyright for this article reverts to public domain 28 years after publication.
  • Journal: Trans. Amer. Math. Soc. 366 (2014), 341-393
  • MSC (2010): Primary 57M25, 57M50, 57M99
  • DOI: https://doi.org/10.1090/S0002-9947-2013-05837-0
  • MathSciNet review: 3118399