On the Burau representation modulo a small prime
arXiv:math/9810191
Abstract
We discuss techniques for analysing the structure of the group obtained by reducing the image of the Burau representation of the braid group modulo a prime. The main tools are a certain sesquilinear form first introduced by Squier and consideration of the action of the group on a Euclidean building.
12 pages. Published copy, also available at http://www.maths.warwick.ac.uk/gt/GTMon1/paper6.abs.html