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The Meridional Rank Conjecture asks whether the bridge number of a knot in $S^3$ is equal to the minimal number of meridians needed to generate the fundamental group of its complement. In this paper we investigate the analogous conjecture…

Geometric Topology · Mathematics 2023-02-07 Jason Joseph , Puttipong Pongtanapaisan

The (Strong) Slope Conjecture relates the degree of the colored Jones polynomial of a knot to certain essential surfaces in the knot complement. We verify the Slope Conjecture and the Strong Slope Conjecture for 3-string Montesinos knots…

Geometric Topology · Mathematics 2018-04-17 Xudong Leng , Zhiqing Yang , Ximin Liu

By studying the Heegaard Floer homology of the preimage of a knot K in S^3 inside its double branched cover, we develop simple obstructions to K having finite order in the classical smooth concordance group. As an application, we prove that…

Geometric Topology · Mathematics 2014-11-11 J. Elisenda Grigsby , Daniel Ruberman , Saso Strle

The alternating knots, links and twists projected on the $S_2$ sphere were identified with the phase space of a Hamiltonian dynamic system of one degree of freedom. The saddles of the system correspond to the crossings, the edges correspond…

Geometric Topology · Mathematics 2007-12-14 E. Piña

The unknotting number of knots is a difficult quantity to compute, and even its behavior under basic satelliting operations is not understood. We establish a lower bound on the unknotting number of cable knots and iterated cable knots…

Geometric Topology · Mathematics 2022-06-10 Jennifer Hom , Tye Lidman , JungHwan Park

Hom and Wu introduced the knot concordance invariant $\nu^{+}$ for knots in $S^{3}$ and proved that it gives a lower bound for the slice genus. Wu and Yang extended $\nu^{+}$ to knots in rational homology $3$-spheres, where it gives a lower…

Geometric Topology · Mathematics 2026-03-20 Junghwan Park , Zhongtao Wu , Jingling Yang

This paper employs knot invariants and results from hyperbolic geometry to develop a practical procedure for checking the cosmetic surgery conjecture on any given one-cusped manifold. This procedure has been used to establish the following…

Geometric Topology · Mathematics 2025-11-27 David Futer , Jessica S. Purcell , Saul Schleimer

Ascending numbers are determined for 64 knots with at most n=10 crossings. After proving the theorem about the signature of alternating knot families, we distinguished all families of knots obtained from generating alternating knots with at…

Geometric Topology · Mathematics 2011-07-13 Slavik Jablan

In this paper we use artificial neural networks to predict and help compute the values of certain knot invariants. In particular, we show that neural networks are able to predict when a knot is quasipositive with a high degree of accuracy.…

Geometric Topology · Mathematics 2016-10-19 Mark C. Hughes

The "slope-number" of a graph $G$ is the minimum number of distinct edge slopes in a straight-line drawing of $G$ in the plane. We prove that for $\Delta\geq5$ and all large $n$, there is a $\Delta$-regular $n$-vertex graph with…

Combinatorics · Mathematics 2008-09-09 Vida Dujmovic' , Matthew Suderman , David R. Wood

Topological triangulations of orientable and non-orientable surfaces with arbitrary genus have important applications in quantum geometry, graph theory and statistical physics. However, until now only the asymptotics for 2-spheres are known…

Computational Physics · Physics 2016-05-04 Benedikt Krüger , Klaus Mecke

We give an upper bound on the distance between a degeneracy slope for a very full essential lamination and a boundary slope of an essential surface embedded in a compact, orientable, irreducible, atoroidal 3-manifold with incompressible…

Geometric Topology · Mathematics 2026-02-04 Kazuhiro Ichihara

We show that, for any given 3-manifold M, there are at most finitely many hyperbolic knots K in the 3-sphere and fractions p/q (with q > 22), such that M is obtained by p/q surgery along K. This is a corollary of the following result. If M…

Geometric Topology · Mathematics 2007-05-23 Daryl Cooper , Marc Lackenby

We use the Chebyshev knot diagram model of Koseleff and Pecker in order to introduce a random knot diagram model by assigning the crossings to be positive or negative uniformly at random. We give a formula for the probability of choosing a…

Geometric Topology · Mathematics 2015-08-14 Moshe Cohen , Sunder Ram Krishnan

Simple closed curves in the plane can be mapped to nontrivial knots under the action of origami foldings that allow the paper to self-intersect. We show all tame knot types may be produced in this manner, motivating the development of a new…

Geometric Topology · Mathematics 2021-05-05 Joseph Slote , Thomas Bertschinger

We establish a new fundamental relationship between total curvature of knots and crossing number. If K is a smooth knot in 3-space, R the cross-section radius of a uniform tube neighborhood of K, L the arclength of K, and k the total…

Geometric Topology · Mathematics 2007-05-23 Gregory Buck , Jonathan Simon

This paper provides a construction of a quantum statistical mechanical system associated to knots in the 3-sphere and cyclic branched coverings of the 3-sphere, which is an analog, in the sense of arithmetic topology, of the Bost-Connes…

Mathematical Physics · Physics 2017-02-01 Matilde Marcolli , Yujie Xu

The untwisting number of a knot K is the minimum number of null-homologous twists required to convert K to the unknot. Such a twist can be viewed as a generalization of a crossing change, since a classical crossing change can be effected by…

Geometric Topology · Mathematics 2024-07-24 Samantha Allen , Kenan Ince , Seungwon Kim , Benjamin Matthias Ruppik , Hannah Turner

In this article, we propose a new approach for describing and understanding knots and links in a 3-manifold through the use of an embedded non-orientable surface. Specifically, we define a plat-like representation based on this…

Geometric Topology · Mathematics 2025-03-04 Alessia Cattabriga , Paolo Cavicchioli , Rama Mishra , Visakh Narayanan

The contents of this 6-page paper have been subsumed into the 13-page paper, "A note on closed 3-braids", arXiv:0802.1072 [math.GT]. This paper is correct, but contains less information than the new one. The topological classification of…

Geometric Topology · Mathematics 2008-02-11 Joan S. Birman , William W. Menasco
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