On a Theorem of Burde and de Rham
arXiv:0908.2260
Abstract
We generalize a theorem of Burde and de Rham characterizing the zeros of the Alexander polynomial. Given a representation of a knot group $Ï$, we define an extension of $Ï$, the Crowell group. For any GL(n,C) representation of $Ï$, the zeros of the associated twisted Alexander polynomial correspond to representations of the Crowell group into the group of dilations of C^n.
9 pages, 1 figure