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Virtual knot theory has experienced a lot of nice features that did not appear in classical knot theory, e.g., parity and picture-valued invariants. In the present paper we use virtual knot theory effects to construct new representations of…

Geometric Topology · Mathematics 2023-03-03 V. O. Manturov , I. M. Nikonov

We give a new proof of Markov's classical theorem relating any two closed braid representations of the same knot or link. The proof is based upon ideas in a forthcoming paper by the authors, "Stabilization in the braid groups". The new…

Geometric Topology · Mathematics 2007-05-23 Joan S. Birman , William W. Menasco

In this paper we will present the results of Artin--Markov on braid groups by using the Groebner--Shirshov basis. As a consequence we can reobtain the normal form of Artin--Markov--Ivanovsky as an easy corollary.

Group Theory · Mathematics 2008-06-09 L. A. Bokut , V. V. Chaynikov , K. P. Shum

It is shown that two braids represent transversally isotopic links if and only if one can pass from one braid to another by conjugations in braid groups, positive Markov moves, and their inverses.

Geometric Topology · Mathematics 2024-12-04 S. Yu. Orevkov , V. V. Shevchishin

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

This paper gives a new interpretation of the virtual braid group in terms of a strict monoidal category SC that is freely generated by one object and three morphisms, two of the morphisms corresponding to basic pure virtual braids and one…

Geometric Topology · Mathematics 2015-03-19 Louis H. Kauffman , Sofia Lambropoulou

The concepts of twisted knot theory and singular knot theory inspire the introduction of singular twisted knot theory. This study showcases similar findings for singular twisted links, including the Alexander theorem and the Markov theorem…

Geometric Topology · Mathematics 2024-03-27 Komal Negi , Madeti Prabhakar

The virtual braid groups are generalizations of the classical braid groups. This paper gives an elementary proof that the classical braid group injects into the virtual braid group over the same number of strands.

Geometric Topology · Mathematics 2020-08-25 Robin Gaudreau

In this paper we first give a one-move version of Markov's braid theorem for knot isotopy in $S^3$ that sharpens the classical theorem. Then a relative version of Markov's theorem concerning a fixed braided portion in the knot. We also…

Geometric Topology · Mathematics 2007-05-23 Sofia Lambropoulou , Colin P. Rourke

In the present paper, we introduce $\mathbb{Z}_2$-braids and, more generally, $G$-braids for an arbitrary group $G$. They form a natural group-theoretic counterpart of $G$-knots, see \cite{reidmoves}. The underlying idea, used in the…

Geometric Topology · Mathematics 2015-07-23 Denis Fedoseev , Vassily Manturov , Zhiyun Cheng

Let $B_n$ denote the classical braid group on $n$ strands and let the {\em mixed braid group} $B_{m,n}$ be the subgroup of $B_{m+n}$ comprising braids for which the first $m$ strands form the identity braid. Let…

Geometric Topology · Mathematics 2007-05-23 Sofia Lambropoulou , Colin P. Rourke

A transverse knot is a knot that is transverse to the planes of the standard contact structure on real 3-space. In this paper we prove the Markov Theorem for transverse braids, which states that two transverse closed braids that are…

Geometric Topology · Mathematics 2007-05-23 Nancy C. Wrinkle

In this paper we study the theory of {\it pseudo knots}, which are knots with some missing crossing information, and we introduce and study the theory of {\it pseudo tied links} and the theory of {\it pseudo knotoids}. In particular, we…

Geometric Topology · Mathematics 2020-11-30 Ioannis Diamantis

In a recent paper by L. A. Bokut, V. V. Chaynikov and K. P. Shum in 2007, Braid group $B_n$ is represented by Artin-Burau's relations. For such a representation, it is told that all other compositions can be checked in the same way. In this…

Group Theory · Mathematics 2010-09-02 Yuqun Chen , Qiuhui Mo

Bonded knots arise naturally in topological protein modeling, where intramolecular interactions such as disulfide bridges stabilize folded configurations. These structures extend classical knot theory by incorporating embedded graphs, and…

Geometric Topology · Mathematics 2025-10-09 Paolo Cavicchioli , Boštjan Gabrovšek , Matic Simonič

We study combinatorial properties of virtual braid groups and we describe relations with finite type invariant theory for virtual knots and Yang-Baxter equations

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

This paper is an introduction to the subject of virtual knot theory, combined with a discussion of some specific new theorems about virtual knots. The new results are as follows: We prove, using a 3-dimensional topology approach that if a…

Geometric Topology · Mathematics 2007-05-23 Louis Kauffman , Vassily Olegovich Manturov

A special class of braids, called woven, is introduced and it is shown that every conjugation class of the braid group contains woven braids. In consequence, links can be presented as plats or closures of woven braids. Restricting on knots,…

q-alg · Mathematics 2008-02-03 Jan A. Kneissler

In this article we prove theorem on Lifting for the set of virtual pure braid groups. This theorem says that if we know presentation of virtual pure braid group $VP_4$, then we can find presentation of $VP_n$ for arbitrary $n > 4$. Using…

Group Theory · Mathematics 2020-02-21 Valeriy G. Bardakov , Jie Wu

The virtual braid group $VB_n$, the virtual twin group $VT_n$ and the virtual triplet group $VL_n$ are extensions of the symmetric group $S_n$, which are motivated by the Alexander-Markov correspondence for virtual knot theories. The…

Group Theory · Mathematics 2024-06-11 Pravin Kumar , Tushar Kanta Naik , Neha Nanda , Mahender Singh