English
Related papers

Related papers: Irreducible representations of welded braid group

200 papers

We provide a complete classification of the homogeneous $3$-local representations of the twin group $T_n$, the virtual twin group $VT_n$, and the welded twin group $WT_n$, for all $n\geq 4$. Beyond this classification, we examine the main…

Representation Theory · Mathematics 2026-02-10 Mohamad N. Nasser

In this paper, we study the representations of the triplet group $L_n$, where $n$ is a positive integer, and its extensions to the virtual and welded triplet groups $VL_n$ and $WL_n$, respectively. We first introduce $L_n$, its extensions,…

Representation Theory · Mathematics 2026-02-10 Mohamad N. Nasser , Nafaa Chbili , Khaled Qazaqzeh

We introduce linear representations of the universal virtual braid group $UV_n(c)$, where $n\geq 2$ and $c\geq 1$, which is a unifying framework for braid-type groups with multiple types of crossings. We classify and study its complex…

Representation Theory · Mathematics 2026-04-22 Mohamad N. Nasser , Oscar Ocampo

For an integer $n \geq 2$, set $B_n$ to be the braid group on $n$ strands and $SB_n$ to be the singular braid group on $n$ strands. $SB_n$ is one of the important group extensions of $B_n$ that appeared in 1998. Our aim in this paper is to…

Representation Theory · Mathematics 2025-04-15 Mohamad N. Nasser

This note tells you how to construct a k(n)-dimensional family of (isomorphism classes of) irreducible representations of dimension n for the three string braid group B_3, where k(n) is an admissible function of your choosing; for example…

Quantum Algebra · Mathematics 2008-04-06 Lieven Le Bruyn

The necklace braid group $\mathcal{NB}_n$ is the motion group of the $n+1$ component necklace link $\mathcal{L}_n$ in Euclidean $\mathbb{R}^3$. Here $\mathcal{L}_n$ consists of $n$ pairwise unlinked Euclidean circles each linked to an…

Quantum Algebra · Mathematics 2019-05-22 Alex Bullivant , Andrew Kimball , Paul Martin , Eric C. Rowell

We study the $n$th degree representations $\hat{\rho_G}$ of $Cb_{n}$ and $\hat{\rho_B}$ of $C_{n}$, defined by Valerij G. Bardakov, where $Cb_{n}$ is the group of basis conjugating automorphisms and $C_n$ is the group of conjugating…

Group Theory · Mathematics 2021-09-28 Mohamad N. Nasser , Mohammad N. Abdulrahim

Representations of braid group $B_n$ on $n \geq 2$ strands by automorphisms of a free group of rank $n$ go back to Artin (1925). In 1991 Kauffman introduced a theory of virtual braids and virtual knots and links. The virtual braid group…

Geometric Topology · Mathematics 2023-06-21 Bogdan Chuzhinov , Andrey Vesnin

We use $q$-Pascal's triangle to define a family of representations of dimension 6 of the braid group $B_3$ on three strings. Then we give a necessary and sufficient condition for these representations to be irreducible.

Group Theory · Mathematics 2023-04-06 Taher I. Mayassi , Mohammad N. Abdulrahim

The Burau representation enables to define many other representations of the braid group $B_n$ by the topological operation of ``cabling braids''. We show here that these representations split into copies of the Burau representation itself…

Representation Theory · Mathematics 2007-05-23 Christian Blanchet , Ivan Marin

A connection is made between the Krammer representation and the Birman-Murakami-Wenzl algebra. Inspired by a dimension argument, a basis is found for a certain irrep of the algebra, and relations which generate the matrices are found.…

Representation Theory · Mathematics 2007-05-23 Matthew G. Zinno

We consider Albeverio- Rabanovich linear representation $\pi$ of the braid group $B_3$. After specializing the indeterminates used in defining the representation to non-zero complex numbers, we prove that the restriction of $\pi$ to the…

Representation Theory · Mathematics 2019-10-11 Hasan A. Haidar , Mohammad N. Abdulrahim

A new infinite series of rational affine algebraic varieties is constructed whose automorphism group contains the automorphism group ${\rm Aut}(F_n)$ of the free group $F_n$ of rank $n$. The automorphism groups of such varieties are…

Algebraic Geometry · Mathematics 2023-07-14 Vladimir L. Popov

We find the irreducible decomposition of the Weil representation of the unitary group $\mathrm{U}_{2n}(A)$, where $A$ is a ramified quadratic extension of a finite, commutative, local, principal ideal ring $R$ and the nilpotency degree of…

Representation Theory · Mathematics 2018-05-08 Allen Herman , Momuita Shau , Fernando Szechtman

We prove that for a suitable class of representations of free group tensor products are generically irreducible. In particular we prove that there exist irreducible boundary realizations with infinite dimensional fiber.

Group Theory · Mathematics 2023-08-29 Waldemar Hebisch

We construct representations of the braid groups B_n on n strands on free Z[q,q^-1,s,s^-1]-modules W_{n,l} using generic Verma modules for an integral version of quantum sl_2. We prove that the W_{n,2} are isomorphic to the faithful…

Geometric Topology · Mathematics 2013-06-03 Craig Jackson , Thomas Kerler

In the present paper we study structural aspects of certain quotients of braid groups and virtual braid groups. In particular, we construct and study linear representations $B_n\to {\rm GL}_{n(n-1)/2}\left(\mathbb{Z}[t^{\pm1}]\right)$,…

Group Theory · Mathematics 2021-07-09 V. Bardakov , I. Emel'yanenkov , M. Ivanov , T. Kozlovskaya , T. Nasybullov , A. Vesnin

For every positive integer $n$, we construct, using algebraic groups, an infinite family of irreducible algebraic varieties $X$,whose automorphism group ${\rm Aut}(X)$ contains the automorphism group ${\rm Aut}(F_n)$ of a free group $F_n$…

Algebraic Geometry · Mathematics 2022-01-31 Vladimir L. Popov

We give a complete classification of simple representations of the braid group B_3 with dimension $\leq 5$ over any algebraically closed f ield. In particular, we prove that a simple d-dimensional representation $\rho: B_3 \to GL(V)$ is…

Representation Theory · Mathematics 2007-05-23 Imre Tuba , Hans Wenzl

We give a simple topological construction of the Burau representations of the loop braid groups. There are four versions: defined either on the non-extended or extended loop braid groups, and in each case there is an unreduced and a reduced…

Geometric Topology · Mathematics 2023-03-07 Martin Palmer , Arthur Soulié