Mathematics – Geometric Topology
Scientific paper
2009-01-02
Geometriae Dedicata 147 (2010):115-130
Mathematics
Geometric Topology
16 pages, 7 figures
Scientific paper
10.1007/s10711-009-9442-6
In recent years, several families of hyperbolic knots have been shown to have both volume and $\lambda_1$ (first eigenvalue of the Laplacian) bounded in terms of the twist number of a diagram, while other families of knots have volume bounded by a generalized twist number. We show that for general knots, neither the twist number nor the generalized twist number of a diagram can provide two-sided bounds on either the volume or $\lambda_1$. We do so by studying the geometry of a family of hyperbolic knots that we call double coil knots, and finding two-sided bounds in terms of the knot diagrams on both the volume and on $\lambda_1$. We also extend a result of Lackenby to show that a collection of double coil knot complements forms an expanding family iff their volume is bounded.
Futer David
Kalfagianni Efstratia
Purcell Jessica S.
No associations
LandOfFree
On diagrammatic bounds of knot volumes and spectral invariants does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On diagrammatic bounds of knot volumes and spectral invariants, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On diagrammatic bounds of knot volumes and spectral invariants will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-380636