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In this paper we construct two different explicit triangulations of the family of double twist knots $K(p,q)$ using methods of triangulating Dehn fillings, with layered solid tori and their double covers. One construction yields the…

Geometric Topology · Mathematics 2025-04-15 Dionne Ibarra , Daniel V. Mathews , Jessica S. Purcell

We show that nontrivial classical pretzel knots L(p,q,r) are hyperbolic with eight exceptions which are torus knots. We find Conway polynomials of n-pretzel links using a new computation tree. As applications, we compute the genera of…

Geometric Topology · Mathematics 2007-07-18 Dongseok Kim , Jaeun Lee

We classify the complete hyperbolic 3-manifolds admitting a maximal cusp of volume at most 2.62. We use this to show that the figure-8 knot complement is the unique 1-cusped hyperbolic 3-manifold with nine or more non-hyperbolic fillings;…

Geometric Topology · Mathematics 2021-09-30 David Gabai , Robert Haraway , Robert Meyerhoff , Nathaniel Thurston , Andrew Yarmola

We construct a hyperbolic 3-manifold $M$ (with $\partial M$ totally geodesic) which contains no essential closed surfaces, but for any even integer $g> 0$ there are infinitely many separating slopes $r$ on $\partial M$ so that $M[r]$, the…

Geometric Topology · Mathematics 2007-05-23 Ruifeng Qiu , Shicheng Wang

Loosely speaking, the Volume Conjecture states that the limit of the n-th colored Jones polynomial of a hyperbolic knot, evaluated at the primitive complex n-th root of unity is a sequence of complex numbers that grows exponentially.…

Geometric Topology · Mathematics 2014-10-01 Stavros Garoufalidis , Yueheng Lan

Any profinite isomorphism between two cusped finite-volume hyperbolic 3-manifolds carries profinite isomorphisms between their Dehn fillings. With this observation, we prove that some cusped finite-volume hyperbolic 3-manifolds are…

Geometric Topology · Mathematics 2026-03-17 Xiaoyu Xu

Baker showed that 10 of the 12 classes of Berge knots are obtained by surgery on the minimally twisted 5-chain link. In this article we enumerate all hyperbolic knots in S^3 obtained by surgery on the minimally twisted 5 chain link that…

Geometric Topology · Mathematics 2018-05-02 Benjamin Audoux , Ana G. Lecuona , Fionntan Roukema

We construct hyperbolic L-space knots that are not concordant to any linear combination of algebraic knots.

Geometric Topology · Mathematics 2025-03-26 Maciej Borodzik , Masakazu Teragaito

In the complement of a hyperbolic Montesinos knot with 4 rational tangles, we investigate the number of closed, connected, essential, orientable surfaces of a fixed genus $g$, up to isotopy. We show that there are exactly 12 genus 2…

Geometric Topology · Mathematics 2022-04-06 Brannon Basilio

In this note, we show that if there is a knot in $S^3$ having $\mathbb{Z}_m$ torsion in its Khovanov homology, then there are infinitely many hyperbolic knots and infinitely many prime satellite knots having $\mathbb{Z}_m$ torsion in their…

Geometric Topology · Mathematics 2022-05-18 Micah Chrisman , Sujoy Mukherjee

We show that for many classical knots one can find generalized torsion in the fundamental group of its complement, commonly called the knot group. It follows that such a group is not bi-orderable. Examples include all torus knots, the…

Algebraic Topology · Mathematics 2019-08-15 Geoff Naylor , Dale Rolfsen

We prove that the knots and links that admit a 3-highly twisted irreducible diagram with more than two twist regions are hyperbolic. This should be compared with a result of Futer-Purcell for 6-highly twisted diagrams. While their proof…

Geometric Topology · Mathematics 2025-03-12 Nir Lazarovich , Yoav Moriah , Tali Pinsky

The work of Jorgensen and Thurston shows that there is a finite number N(v) of orientable hyperbolic 3-manifolds with any given volume v. We show that there is an infinite sequence of closed orientable hyperbolic 3-manifolds, obtained by…

Geometric Topology · Mathematics 2012-03-30 Craig Hodgson , Hidetoshi Masai

Neumann and Reid conjecture that there are exactly three knot complements which admit hidden symmetries. This paper establishes several results that provide evidence for the conjecture. Our main technical tools provide obstructions to…

Geometric Topology · Mathematics 2020-10-02 Eric Chesebro , Jason DeBlois , Neil R Hoffman , Christian Millichap , Priyadip Mondal , William Worden

We construct an infinite family of hyperbolic, homologically thin knots that are not quasi-alternating. To establish the latter, we argue that the branched double-cover of each knot in the family does not bound a negative definite…

Geometric Topology · Mathematics 2014-02-26 Joshua Evan Greene , Liam Watson

T. Saito and M. Teragaito asked whether Berge knots of type VII are hyperbolic, and showed that some infinite sequences of the knots are hyperbolic. We show that Berge knots of types VII and VIII are hyperbolic except the known sequence of…

Geometric Topology · Mathematics 2012-04-03 Teruhisa Kadokami

We show that the cusp volume of a hyperbolic alternating knot can be bounded above and below in terms of the twist number of an alternating diagram of the knot. This leads to diagrammatic estimates on lengths of slopes, and has some…

Geometric Topology · Mathematics 2016-09-21 Marc Lackenby , Jessica S. Purcell

Given a hyperbolic 3-manifold with torus boundary, we bound the change in volume under a Dehn filling where all slopes have length at least 2\pi. This result is applied to give explicit diagrammatic bounds on the volumes of many knots and…

Geometric Topology · Mathematics 2009-03-06 David Futer , Efstratia Kalfagianni , Jessica S. Purcell

We present an atlas of Legendrian knots in standard contact three-space. This gives a conjectural Legendrian classification for all knots with arc index at most 9, including alternating knots through 7 crossings and nonalternating knots…

Symplectic Geometry · Mathematics 2013-05-08 Wutichai Chongchitmate , Lenhard Ng

It is conjectured that every cusped hyperbolic 3-manifold has a decomposition into positive volume ideal hyperbolic tetrahedra (a "geometric" triangulation of the manifold). Under a mild homology assumption on the manifold we construct…

Geometric Topology · Mathematics 2014-02-26 Craig D. Hodgson , J. Hyam Rubinstein , Henry Segerman