Thin presentation of knots and lens spaces

A. Deruelle; D. Matignon

doi:10.2140/agt.2003.3.677

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Thin presentation of knots and lens spaces

A. Deruelle·D. Matignon

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Abstract

This paper concerns thin presentations of knots K in closed 3-manifolds M^3 which produce S^3 by Dehn surgery, for some slope gamma. If M does not have a lens space as a connected summand, we first prove that all such thin presentations, with respect to any spine of M have only local maxima. If M is a lens space and K has an essential thin presentation with respect to a given standard spine (of lens space M) with only local maxima, then we show that K is a 0-bridge or 1-bridge braid in M; furthermore, we prove the minimal intersection between K and such spines to be at least three, and finally, if the core of the surgery K_gamma yields S^3 by r-Dehn surgery, then we prove the following inequality: |r| <= 2g, where g is the genus of K_gamma.

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BibTeX RIS

A. Deruelle, D. Matignon. 2004-02-27. Thin presentation of knots and lens spaces. https://doi.org/10.2140/agt.2003.3.677

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