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We discuss an "extrinsic" property of knots in a 3-subspace of the 3-sphere $S^3$ to characterize how the subspace is embedded in $S^3$. Specifically, we show that every knot in a subspace of the 3-sphere is transient if and only if the…

Geometric Topology · Mathematics 2016-03-30 Yuya Koda , Makoto Ozawa

In Dunfield's catalog of the hyperbolic manifolds in the SnapPy census which are complements of L-space knots in $S^3$, we determine that $22$ have tunnel number $2$ while the remaining all have tunnel number $1$. Notably, these $22$…

Let $K$ be a nontrivial knot in $S^3$. We say that an element of the knot group $G(K)$ is \textit{persistent} if it remains nontrivial under all nontrivial Dehn fillings. Such elements exist for every nontrivial knot. Indeed, Property P is…

Geometric Topology · Mathematics 2026-04-03 Tetsuya Ito , Kimihiko Motegi , Masakazu Teragaito

We extend the list of known band structure topologies to include a large family of hyperbolic nodal links and knots, occurring both in conventional Hermitian systems where their stability relies on discrete symmetries, and in the…

Mesoscale and Nanoscale Physics · Physics 2019-08-14 Marcus Stålhammar , Lukas Rødland , Gregory Arone , Jan Carl Budich , Emil J. Bergholtz

We show that, given any $n$ and $\alpha$, every embedding of any sufficiently large complete graph in $\mathbb{R}^3$ contains an oriented link with components $Q_1$, ..., $Q_n$ such that for every $i\not =j$, $|\lk(Q_i,Q_j)|\geq\alpha$ and…

Geometric Topology · Mathematics 2009-01-18 Erica Flapan , Blake Mellor , Ramin Naimi

We generalize the results of [AS], finding large classes of totally geodesic Seifert surfaces in hyperbolic knot and link complements, each the lift of a rigid 2-orbifold embedded in some hyperbolic 3-orbifold. In addition, we provide a…

Myers shows that every compact, connected, orientable $3$--manifold with no $2$--sphere boundary components contains a hyperbolic knot. We use work of Ikeda with an observation of Adams-Reid to show that every $3$--manifold subject to the…

Geometric Topology · Mathematics 2021-09-02 Kenneth L. Baker , Neil R. Hoffman

We complete the project begun by Callahan, Dean and Weeks to identify all knots whose complements are in the SnapPea census of hyperbolic manifolds with seven or fewer tetrahedra. Many of these ``simple'' hyperbolic knots have high crossing…

Geometric Topology · Mathematics 2007-05-23 Abhijit Champanerkar , Ilya Kofman , Eric Patterson

Let H be a discrete cocompact subgroup of SL_2(C). We conjecture that the quotient manifold X=SL_2(C)/H contains infinitely many non-isogeneous elliptic curves and prove that this is indeed the case if Schanuel's conjecture holds. We also…

Algebraic Geometry · Mathematics 2007-05-23 Joerg Winkelmann

We prove that for three-manifolds satisfying a certain algebraic condition on their fundamental group, null-homotopic knots are determined by their complements. This answers a Kirby Problem posed by Boileau for this special case of…

Geometric Topology · Mathematics 2025-11-10 Aliakbar Daemi , Tye Lidman

We give a Khovanov homology proof that hyperbolic twist knots do not admit non-trivial Dehn surgeries with finite fundamental group.

Geometric Topology · Mathematics 2012-10-05 Liam Watson

In 2010, Turaev introduced knotoids as a variation on knots that replaces the embedding of a circle with the embedding of a closed interval with two endpoints. A variety of knot invariants have been extended to knotoids. Here we provide…

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

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

An almost-fibered knot is a knot whose complement possesses a circular thin position in which there is one and only one weakly incompressible Seifert surface and one incompressible Seifert surface. Infinite examples of almost-fibered knots…

Geometric Topology · Mathematics 2024-03-19 Mario Eudave-Muñoz , Araceli Guzmán-Tristán , Enrique Ramírez-Losada

Building off ideas developed by Agol, we construct a family of hyperbolic knots $K_n$ whose complements contain no closed incompressible surfaces and have Heegaard genus exactly $n$. These are the first known examples of small knots having…

Geometric Topology · Mathematics 2020-10-09 William Worden

In this paper we provide the first examples of arithmetic hyperbolic 3-manifolds that are rational homology spheres and bound geometrically either compact or cusped hyperbolic 4-manifolds.

Geometric Topology · Mathematics 2022-05-11 Leonardo Ferrari , Alexander Kolpakov , Alan W. Reid

We construct examples of hyperbolic rational homology spheres and hyperbolic knot complements in rational homology spheres containing closed embedded totally geodesic surfaces.

Geometric Topology · Mathematics 2009-04-23 Jason DeBlois

A well-known conjecture in knot theory says that the percentage of hyperbolic knots amongst all of the prime knots of $n$ or fewer crossings approaches $100$ as $n$ approaches infinity. In this paper, it is proved that this conjecture…

Geometric Topology · Mathematics 2016-12-13 Andrei Malyutin

Although there are infinitely many knots with superbridge index n for every even integer n>2, there are only finitely many knots with superbridge index 3.

Geometric Topology · Mathematics 2007-05-23 Choon Bae Jeon , Gyo Taek Jin