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The main theorem characterizes all Legendrian negative torus knots in universally tight lens space in the sense of coarse equivalence. Together with Onaran's results on Legendrian positive torus knots, all Legendrian torus knots in…

几何拓扑 · 数学 2024-12-09 Han Zhang

We give some conditions on positive braids with at least two full twists that ensure their closure is a hyperbolic knot, with applications to the geometric classification of T-links, arising from dynamics, and twisted torus knots.

几何拓扑 · 数学 2022-03-22 Thiago de Paiva

Twisted torus knots and links are given by twisting adjacent strands of a torus link. They are geometrically simple and contain many examples of the smallest volume hyperbolic knots. Many are also Lorenz links. We study the geometry of…

We prove some classification results for tight contact structure in the 3-space, -ball and -sphere that are invariant with respect to some arbitrary involution, that is conjugated to the standard rotation around the x-axis. Unlike the…

几何拓扑 · 数学 2026-01-21 Mirko Torresani

In this work, we find a closed form formula for the braid index of an $n$-bridge braid, a class of positive braid knots which simultaneously generalizes torus knots, 1-bridge braids, and twisted torus knots. Our proof is elementary,…

几何拓扑 · 数学 2023-09-12 Dane Gollero , Siddhi Krishna , Marissa Loving , Viridiana Neri , Izah Tahir , Len White

We characterize the oriented Seifert-fibered three-manifolds which admit positive, transverse contact structures.

辛几何 · 数学 2014-10-01 Paolo Lisca , Gordana Matic

We present a direct connection between torus knots and Hopfions by finding stable and static solutions of the extended Faddeev-Skyrme model with a ferromagnetic potential term. (P,Q)--torus knots consisting of |Q| sine-Gordon kink strings…

高能物理 - 理论 · 物理学 2013-12-17 Michikazu Kobayashi , Muneto Nitta

In the first part of this paper, we present general results concerning the colorability of torus knots using conjugation quandles over any abstract group. Subsequently, we offer a numerical characterization for the colorability of torus…

群论 · 数学 2023-08-22 Filippo Spaggiari

We use microlocal sheaf theory to show that if two knots have Legendrian isotopic conormal tori, then the knots are isotopic or mirror images.

几何拓扑 · 数学 2021-02-02 Vivek Shende

Every torus knot can be represented as a Fourier-(1,1,2) knot which is the simplest possible Fourier representation for such a knot. This answers a question of Kauffman and confirms the conjecture made by Boocher, Daigle, Hoste and Zheng.…

几何拓扑 · 数学 2007-08-28 Jim Hoste

In math.GT/0002110 the author's Theorems 1.1 and 1.2, combined, implied that iterated torus knots are transversally simple. This result is in error and this erratum pin points the error. In "An addendum on iterated torus knots" a more…

几何拓扑 · 数学 2007-05-23 William W. Menasco

We obtain the full list of Goeritz invariants of all torus knots and links.

几何拓扑 · 数学 2013-12-31 K. Ahara , S. Watanabe

We construct an enhanced version of knot contact homology, and show that we can deduce from it the group ring of the knot group together with the peripheral subgroup. In particular, it completely determines a knot up to smooth isotopy. The…

辛几何 · 数学 2021-02-02 Tobias Ekholm , Lenhard Ng , Vivek Shende

S. Satoh has defined a construction to obtain a ribbon torus knot given a welded knot. This construction is known to be surjective. We show that it is not injective. Using the invariant of the peripheral structure, it is possible to provide…

几何拓扑 · 数学 2008-08-08 Blake Winter

We extend Howie's characterization of alternating knots to give a topological characterization of toroidally alternating knots, which were defined by Adams. We provide necessary and sufficient conditions for a knot to be toroidally…

几何拓扑 · 数学 2016-08-02 Seungwon Kim

If a knot is a nontrivial connected sum of positive torus knots, then it is not concordant to an L-space knot.

几何拓扑 · 数学 2018-06-13 Charles Livingston

We investigate the line between tight and overtwisted for surgeries on fibred transverse knots in contact 3-manifolds. When the contact structure $\xi_K$ is supported by the fibred knot $K \subset M$, we obtain a characterisation of when…

几何拓扑 · 数学 2016-12-28 James Conway

We show that tori in Engel 4-manifolds behave analogously to knots in contact 3-manifolds: Every torus with trivial normal bundle is isotopic to infinitely many distinct transverse tori, distinguished locally (and globally in the…

几何拓扑 · 数学 2025-06-03 Robert E. Gompf

We establish the existence of a secondary Reeb orbit set with quantitative action and linking bounds for any contact form on the standard tight three-sphere admitting the standard transverse positive $T(p,q)$ torus knot as an elliptic Reeb…

几何拓扑 · 数学 2025-02-13 Jo Nelson , Morgan Weiler

We classify positive, tight contact structures on closed Seifert fibered 3-manifolds with base S^2, three singular fibers and e_0\geq 0.

辛几何 · 数学 2007-05-23 Paolo Ghiggini , Paolo Lisca , Andras I. Stipsicz