English
Related papers

Related papers: The Lawrence--Krammer representation is unitary

200 papers

The Lawrence representation $L_{n,m}$ is a family of homological representation of the braid group $B_n$, which specializes to the reduced Burau and the Lawrence-Krammer representation when $m$ is 1 and 2. In this article we show that the…

Geometric Topology · Mathematics 2007-05-23 Hao Zheng

The braid groups B_n can be defined as the mapping class group of the n-punctured disc. The Lawrence-Krammer representation of the braid group B_n is the induced action on a certain twisted second homology of the space of unordered pairs of…

Group Theory · Mathematics 2007-05-23 Stephen J. Bigelow

We study a wide range of homologically-defined representations of surface braid groups and of mapping class groups of surfaces, including the Lawrence-Bigelow representations of the classical braid groups. These representations naturally…

Geometric Topology · Mathematics 2025-09-16 Martin Palmer , Arthur Soulié

Given a knot and an SL(n,C) representation of its group that is conjugate to its dual, the representation that replaces each matrix with its inverse-transpose, the associated twisted Reidemeister torsion is reciprocal. An example is given…

Geometric Topology · Mathematics 2014-10-01 Jonathan A. Hillman , Daniel S. Silver , Susan G. Williams

We define a family of the braid group representations via the action of the $R$-matrix (of the quasitriangular extension) of the restricted quantum $\mathfrak{sl}(2)$ on a tensor power of a simple projective module. This family is an…

Geometric Topology · Mathematics 2019-09-26 Konstantinos Karvounis

Let B be the generalized braid group associated to some finite complex reflection group. We define a representation of B of dimension the number of reflections of the corresponding reflection group, which generalizes the Krammer…

Representation Theory · Mathematics 2008-10-04 Ivan Marin

Various properties of a class of braid matrices, presented before, are studied considering $N^2 \times N^2 (N=3,4,...)$ vector representations for two subclasses. For $q=1$ the matrices are nontrivial. Triangularity $(\hat R^2 =I)$…

Quantum Algebra · Mathematics 2009-11-10 A. Chakrabarti

The ``Links-Gould invariant'' is a two-variable Laurent polynomial invariant of oriented (1,1) tangles, which is derived from the representation of the braid generator associated with the one-parameter family of four dimensional…

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

Matrix transposition induces an involution on the isomorphism classes of semi-simple n-dimensional representations of the three string braid group. We show that a connected component of this variety can detect braid-reversion or that the…

Rings and Algebras · Mathematics 2011-02-22 Lieven Le Bruyn

We construct a 3-variable enrichment of the Lawrence-Krammer-Bigelow (LKB) representation of the braid groups, which is the limit of a pro-nilpotent tower of representations having the original LKB representation as its bottom layer. We…

Geometric Topology · Mathematics 2025-09-16 Martin Palmer , Arthur Soulié

This work presents an approach towards the representation theory of the braid groups $B_n$. We focus on finite-dimensional representations over the field of Laurent series which can be obtained from representations of infinitesimal braids,…

Representation Theory · Mathematics 2007-05-23 Ivan Marin

This paper gives a connection between well chosen reductions of the Links-Gould invariants of oriented links and powers of the Alexander-Conway polynomial. We prove these formulas by showing the representations of the braid groups we derive…

Geometric Topology · Mathematics 2015-12-01 Ben-Michael Kohli

We define an annular concordance invariant and study its properties. When specialized to braids, this invariant gives bounds on band rank. We introduce a modified chain complex to reformulate the invariant. Then, by focusing on a special…

Geometric Topology · Mathematics 2023-01-26 Apratim Chakraborty

We discuss a generalization of Clifford algebras known as generalized Clifford algebras (in particular, ternary Clifford algebras). In these objects, we have a fixed higher-degree form (in particular, a ternary form) instead of a quadratic…

Mathematical Physics · Physics 2025-06-10 D. S. Shirokov

We employ a solution of the Yang-Baxter equation to construct invariants for knot-like objects. Specifically, we consider a Yang-Baxter state model for the sl(n) polynomial of classical links and extend it to oriented singular links and…

Geometric Topology · Mathematics 2021-12-16 Carmen Caprau , Tsutomu Okano , Danny Orton

Using the recoupling theory, we define a representation of the pure braid group and show that it is not trivial.

Geometric Topology · Mathematics 2023-04-14 V. O. Manturov , I. M. Nikonov

This paper aims to determine the images of the braid group under representations afforded by the Yang Baxter equation when the solution is a nontrivial $4 \times 4$ matrix. Making the assumption that all the eigenvalues of the Yang Baxter…

Geometric Topology · Mathematics 2008-07-28 Jennifer M. Franko

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 this paper we indicate one method of construction of linear representations of groups and algebras with translation invariant (except, maybe , finite number) defining relationships. As an illustration of this method, we give one approach…

q-alg · Mathematics 2016-09-08 Vladimir K. Medvedev

In this paper we define and present a simple combinatorial formula for a 3-variable Laurent polynomial invariant of conjugacy classes in Artin braid group $B_m$. We show that this Laurent polynomial satisfies the Conway skein relation and…

Geometric Topology · Mathematics 2013-10-09 Michael Brandenbursky