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A general result of Epstein and Thurston implies that all link groups are automatic, but the proof provides no explicit automaton. Here we show that the groups of all torus links are groups of fractions of so-called Garside monoids, i.e.,…

Group Theory · Mathematics 2007-05-23 Matthieu Picantin

We introduce a framework to analyze knots and links in an unmarked solid torus. We discuss invariants that detect when such links are equivalent under an ambient homeomorphism, and show that the multivariable Alexander polynomial is such in…

Geometric Topology · Mathematics 2025-05-20 John M. Sullivan , Max Zahoransky von Worlik

This paper describes a method for the automatic evaluation of the Links-Gould two-variable polynomial link invariant (LG) for any link, given only a braid presentation. This method is currently feasible for the evaluation of LG for links…

Geometric Topology · Mathematics 2007-05-23 David De Wit

This work is the first step towards a description of the Gromov boundary of the free factor graph of a free product, with applications to subgroup classification for outer automorphisms. We extend the theory of algebraic laminations dual to…

Group Theory · Mathematics 2019-10-30 Vincent Guirardel , Camille Horbez

We introduce a new braid-theoretic framework with which to understand the Legendrian and transversal classification of knots, namely a Legendrian Markov Theorem without Stabilization which induces an associated transversal Markov Theorem…

Geometric Topology · Mathematics 2015-06-18 Douglas J. LaFountain , William W. Menasco

We prove that the Alexander polynomials of certain families of alternating 4-braid knots satisfy Fox's Trapezoidal Conjecture. Moreover, we give explicit formulas for the signature and for the first 4 coefficients of the Alexander…

Geometric Topology · Mathematics 2023-10-24 Mark E. AlSukaiti , Nafaa Chbili

In this paper, we unify the Markov theory of a variety of different types of graphs used in graphical Markov models by introducing the class of loopless mixed graphs, and show that all independence models induced by $m$-separation on such…

Other Statistics · Statistics 2014-03-13 Kayvan Sadeghi , Steffen Lauritzen

We characterize, in an algebraic and in a diagrammatic way, Milnor string link invariants indexed by sequences where any index appears at most $k$ times, for any fixed $k\ge 1$. The algebraic characterization is given in terms of an…

Geometric Topology · Mathematics 2022-05-11 Benjamin Audoux , Jean-Baptiste Meilhan , Akira Yasuhara

We give a technical result that implies a straightforward necessary and sufficient conditions for a graph of groups with virtually cyclic edge groups to be one ended. For arbitrary graphs of groups, we show that if their fundamental group…

Group Theory · Mathematics 2016-01-20 Nicholas Touikan

In this paper, we define the notion of a virtually symmetric representation of representations of virtual braid groups and prove that many known representations are equivalent to virtually symmetric. Using one such representation, we define…

Geometric Topology · Mathematics 2021-12-13 Valeriy G. Bardakov , Mikhail V. Neshchadim , Manpreet Singh

Given a virtual link diagram $D$, we define its unknotting index $U(D)$ to be minimum among $(m, n)$ tuples, where $m$ stands for the number of crossings virtualized and $n$ stands for the number of classical crossing changes, to obtain a…

Geometric Topology · Mathematics 2020-11-09 Kirandeep Kaur , Madeti Prabhakar , Andrei Vesnin

We study the structure of the virtual braid group. It is shown that the virtual braid group is a semi--direct product of the virtual pure braid group and the symmetric group. Also, it is shown that the virtual pure braid group is a…

Group Theory · Mathematics 2007-05-23 Valerij G. Bardakov

In this paper we define a monoid of pseudo braids and prove that this monoid is isomorphic to a singular braid monoid. We also prove an analogue of Markov's theorem for pseudo braids.

Geometric Topology · Mathematics 2015-09-30 Valeriy G. Bardakov , Slavik Jablan , Hang Wang

For any virtual link, a class of new links can be defined called stacks, in which copies of the virtual link are placed on top of one another. The resulting virtual link depends only on the virtual isotopy class of the original link, and…

Geometric Topology · Mathematics 2026-02-04 Blake K Winter

In this paper we introduce and study the theory of pseudo links in the genus $g$ handlebody, $H_g$. Pseudo links are links with some missing crossing information that naturally generalize the notion of knot diagrams. The motivation for…

Geometric Topology · Mathematics 2021-10-12 Ioannis Diamantis

In order to obtain a Markov theorem without stabilization, Birman and Menasco introduced the notion of exchange related braids. In this paper I study the way the Fiedler polynomial distinguishes conjugacy classes of some particular braided…

Geometric Topology · Mathematics 2007-09-28 Radu Popescu

We review a braid theoretic self-linking number formula and study its applications.

Geometric Topology · Mathematics 2014-09-18 Tetsuya Ito , Keiko Kawamuro

We prove that the Khovanov homology of alternating knots and 2-component links is equal (as a singly graded group) to the singular homology of a certain space of trace- free, binary dihedral representations of the link group. More…

General Topology · Mathematics 2010-05-20 Sam Lewallen

We define an action of the braid group of a simple Lie algebra on the space of imaginary roots in the corresponding quantum affine algebra. We then use this action to determine an explicit condition for a tensor product of arbitrary…

Quantum Algebra · Mathematics 2007-05-23 Vyjayanthi Chari

Linking diagrams with path composition are ubiquitous, for example: Temperley-Lieb and Brauer monoids, Kelly-Laplaza graphs for compact closed categories, and Girard's multiplicative proof nets. We construct the category Link=Span(iRel),…

Category Theory · Mathematics 2008-05-13 Dominic J. D. Hughes