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Lisa Traynor has described an example of a two-component Legendrian `circular helix link' in the 1-jet space of the circle (with its canonical contact structure) that is topologically but not Legendrian isotopic to that same link with the…

Symplectic Geometry · Mathematics 2010-07-22 Fan Ding , Hansjörg Geiges

The theory of Gauss diagrams and Gauss diagram formulas provides convenient ways to compute knot invariants, such as coefficients of the HOMFLYPT polynomial. In \cite{4,5}, the author uses Gauss diagram formulas to find combinatorial…

Geometric Topology · Mathematics 2022-12-08 Baptiste Gros , Butian Zhang

The use of operational methods of different nature is shown to be a fairly powerful tool to study different problems regarding the theory of Legendre and Legendre-like polynomials. We show how the use of the well known integral…

Classical Analysis and ODEs · Mathematics 2020-02-17 S. Licciardi , G. Dattoli , R. M. Pidatell

Motivated by the problem of global stability of thermodynamical equilibria in non-equilibrium thermodynamics formulated in a recent paper [12], we introduce some mechanisms for constructing semi-infinite orbits of contact Hamiltonian…

Dynamical Systems · Mathematics 2022-08-31 Liang Jin , Jun Yan , Kai Zhao

We continue to develop the tensor-algebra approach to knot polynomials with the goal to present the story in elementary and comprehensible form. The previously reviewed description of Khovanov cohomologies for the gauge group of rank N-1=1…

High Energy Physics - Theory · Physics 2015-06-17 V. Dolotin , A. Morozov

We consider Legendrian contact structures on odd-dimensional complex analytic manifolds. We are particularly interested in integrable structures, which can be encoded by compatible complete systems of second order PDEs on a scalar function…

Differential Geometry · Mathematics 2020-07-24 Boris Doubrov , Alexandr Medvedev , Dennis The

We present new families of examples of non-simple prime Legendrian and transversal knots in tight Lens spaces, which demonstrate that the botany of Legendrians in Lens space is rich. In fact, there are more non-isotopic Legendrians that are…

Geometric Topology · Mathematics 2025-12-29 Ipsita Datta , Tanushree Shah

We construct an infinite commutative lattice of groups whose dual spaces give Kauffman finite-type invariants of long virtual knots. The lattice is based "horizontally" upon the Polyak algebra and extended "vertically" using Manturov's…

Geometric Topology · Mathematics 2013-04-01 Micah W. Chrisman

The goal of this article is twofold. First, we find a natural home for the double affine Hecke algebras (DAHA) in the physics of BPS states. Second, we introduce new invariants of torus knots and links called "hyperpolynomials" that address…

Quantum Algebra · Mathematics 2015-05-08 Ross Elliot , Sergei Gukov

We introduce the notion of rational links in the solid torus. We show that rational links in the solid torus are fully characterized by rational tangles, and hence by the continued fraction of the rational tangle. Furthermore, we generalize…

Geometric Topology · Mathematics 2018-06-18 Khaled Bataineh , Mohamed Elhamdadi , Mustafa Hajij

By using the notion of a rigid R-matrix in a monoidal category and the Reshetikhin--Turaev functor on the category of tangles, we review the definition of the associated invariant of long knots. In the framework of the monoidal categories…

Quantum Algebra · Mathematics 2020-01-01 Rinat Kashaev

We prove that two Legendrian knots in a contact structure which is trivializable as a plane bundle are Legendrian isotopic provided that (1) they are isotopic as framed knots, (2) they have the same rotation number with respect to some…

Geometric Topology · Mathematics 2007-05-23 Katarzyna Dymara

In this master thesis, I present a new family of knots in the solid torus called lassos, and their properties. Given a knot $K$ with Alexander polynomial $\Delta_K(t)$, I then use these lassos as patterns to construct families of satellite…

Geometric Topology · Mathematics 2015-02-03 Adrián Jiménez Pascual

The Chekanov-Eliashberg dg-algebra is a holomorphic curve invariant associated to Legendrian submanifolds of a contact manifold. We extend the definition to Legendrian embeddings of skeleta of Weinstein manifolds. Via Legendrian surgery,…

Symplectic Geometry · Mathematics 2023-03-02 Johan Asplund , Tobias Ekholm

A conjecture of Aganagic and Vafa relates the open Gromov-Witten theory of $X=\mathcal{O}_{\mathbb{P}^{1}}(-1,-1)$ to the augmentation polynomial of Legendrian contact homology. We describe how to use this conjecture to compute genus zero,…

High Energy Physics - Theory · Physics 2016-08-11 Matthew Mahowald

In GT/0006019 oriented quantum algebras were motivated and introduced in a natural categorical setting. Invariants of knots and links can be computed from oriented quantum algebras, and this includes the Reshetikhin-Turaev theory for Ribbon…

Geometric Topology · Mathematics 2007-05-23 Louis H. Kauffman , David E. Radford

In the symplectization of standard contact $3$-space, $\mathbb R \times \mathbb R^3$, it is known that an orientable Lagrangian cobordism between a Legendrian knot and itself, also known as an orientable Lagrangian endocobordism for the…

Symplectic Geometry · Mathematics 2016-11-30 Orsola Capovilla-Searle , Lisa Traynor

We extend the sutured framework to the case of Legendrians with boundary. Using ideas from Lagrangian Floer theory, we define the cylindrical and the wrapped sutured Legendrian homologies of a pair of sutured Legendrians. They fit together…

Symplectic Geometry · Mathematics 2022-06-24 Côme Dattin

We introduce a new invariant of tangles along with an algebraic framework in which to understand it. We claim that the invariant contains the classical Alexander polynomial of knots and its multivariable extension to links. We argue that of…

Quantum Algebra · Mathematics 2013-09-16 Dror Bar-Natan , Sam Selmani

Each ruling of a Legendrian link can be naturally treated as a surface. For knots, the ruling is 2-graded if and only if the surface is orientable. For 2-graded rulings of homogeneous (in particular, alternating) knots, we prove that the…

Geometric Topology · Mathematics 2007-11-26 Tamás Kálmán
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