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Related papers: Non-characterizing slopes for hyperbolic knots

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Conjecturally, a knot in the 3-sphere has only finitely many non-integer non-characterizing slopes. We verify this conjecture for all knots with knot Floer homology satisfying certain simplicity conditions. The class of knots satisfying our…

Geometric Topology · Mathematics 2025-02-11 Duncan McCoy

We show that on a hyperbolic knot $K$ in $S^3$, the distance between any two finite surgery slopes is at most two and consequently there are at most three nontrivial finite surgeries. Moreover in case that $K$ admits three nontrivial finite…

Geometric Topology · Mathematics 2018-03-16 Yi Ni , Xingru Zhang

In contrast with knots, whose properties depend only on their extrinsic topology in $S^3$, there is a rich interplay between the intrinsic structure of a graph and the extrinsic topology of all embeddings of the graph in $S^3$ . For…

Geometric Topology · Mathematics 2009-06-15 Erica Flapan , Hugh Howards

Using the techniques on annulus twists, we observe that $6_3$ has infinitely many non-characterizing slopes, which affirmatively answers a question by Baker and Motegi. Furthermore, we prove that the knots $6_2$, $6_3$, $7_6$, $7_7$, $8_1$,…

Geometric Topology · Mathematics 2021-03-09 Tetsuya Abe , Keiji Tagami

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

Let $K$ be a non-trivial knot in $S^3$, and let $r$ and $r'$ be two distinct rational numbers of same sign, allowing $r$ to be infinite; we prove that there is no orientation-preserving homeomorphism between the manifolds $S^3_r(K)$ and…

Geometric Topology · Mathematics 2014-11-11 Zhongtao Wu

It was conjectured by Lopez that every closed irreducible non-Haken 3-manifold contains a small knot. In this paper, we give explicit examples of hyperbolic small knots in most closed orientable spherical 3-manifolds other than prism…

Geometric Topology · Mathematics 2025-06-03 Kazuhiro Ichihara

We show that on any hyperbolic knot in $S^3$ there is at most one non-integral Dehn surgery which yields a manifold containing an incompressible torus.

Geometric Topology · Mathematics 2009-09-25 Cameron McA. Gordon , Ying-Qing Wu , Xingru Zhang

An $L$-space knot is a knot that admits a positive Dehn surgery yielding an $L$-space. Many known hyperbolic $L$-space knots are braid positive, meaning they can be represented as the closure of a positive braid. Recently, Baker and Kegel…

Geometric Topology · Mathematics 2026-04-29 Keisuke Himeno

We show that if there exists a knot in $S^3$ that admits purely cosmetic surgeries, then there exists a hyperbolic one with this property.

Geometric Topology · Mathematics 2025-09-03 Qiuyu Ren

A knot in the 3-sphere is called an L--space knot if it admits a nontrivial Dehn surgery yielding an L--space. Like torus knots and Berge knots, many L--space knots admit also a Seifert fibered surgery. We give a concrete example of a…

Geometric Topology · Mathematics 2014-10-16 Kimihiko Motegi , Kazushige Tohki

We introduce a new real-valued invariant called the natural slope of a hyperbolic knot in the 3-sphere, which is defined in terms of its cusp geometry. We show that twice the knot signature and the natural slope differ by at most a constant…

Geometric Topology · Mathematics 2024-09-04 Alex Davies , András Juhász , Marc Lackenby , Nenad Tomasev

Surgery on a knot in $S^3$ is said to be an alternating surgery if it yields the double branched cover of an alternating link. The main theoretical contribution is to show that the set of alternating surgery slopes is algorithmically…

Geometric Topology · Mathematics 2026-05-08 Kenneth L. Baker , Marc Kegel , Duncan McCoy

A knot $K\subset S^3$ is called $SU(2)$-abundant if it satisfies two conditions: first, for all but finitely many $r\in\mathbb{Q}\backslash\{0\}$, there exists an irreducible representation $\pi_1(S^3_r(K))\to SU(2)$; second, any slope…

Geometric Topology · Mathematics 2026-01-05 Zhenkun Li , Fan Ye

We prove that there are infinitely many non-homeomorphic hyperbolic knot complements $S^3\setminus K_i = \mathbb{H}^3/\Gamma_i$ for which $\Gamma_i$ contains elements whose trace is an algebraic non-integer.

Geometric Topology · Mathematics 2020-09-29 Alan W. Reid , Nicholas Rouse

This note gives the first example of a hyperbolic knot in the 3-sphere that lacks a nonorientable essential spanning surface; this disproves the Strong Neuwirth Conjecture formulated by Ozawa and Rubinstein. Moreover, this knot has no even…

Geometric Topology · Mathematics 2017-09-15 Nathan M. Dunfield

We construct the first examples of asymmetric L-space knots in $S^3$. More specifically, we exhibit a construction of hyperbolic knots in $S^3$ with both (i) a surgery that may be realized as a surgery on a strongly invertible link such…

Geometric Topology · Mathematics 2021-01-06 Kenneth L. Baker , John Luecke

For any homotopy class h in any compact orientable 3-manifold M which is closed or has exclusively torus boundary components, we produce infinitely many pairs of distinct knots representing h with orientation-preserving homeomorphic…

Geometric Topology · Mathematics 2025-10-08 Matthew Elpers

We show that the proportion of hyperbolic knots among all of the prime knots of $n$ or fewer crossings does not converge to $1$ as $n$ approaches infinity. Moreover, we show that if $K$ is a nontrivial knot then the proportion of satellites…

Geometric Topology · Mathematics 2019-08-20 Yury Belousov , Andrei Malyutin

Concerning the set of exceptional surgery slopes for a hyperbolic knot, Lackenby and Meyerhoff proved that the maximal cardinality is 10 and the maximal diameter is 8. Their proof is computer-aided in part, and both bounds are achieved…

Geometric Topology · Mathematics 2012-02-21 Kazuhiro Ichihara