Studying the multivariable Alexander polynomial by means of Seifert surfaces
arXiv:math/0406150
Abstract
We show how Seifert surfaces, so useful for the understanding of the Alexander polynomial Δ_L(t), can be generalized in order to study the multivariable Alexander polynomial Δ_L(t_1,...,t_μ). In particular, we give an elementary and geometric proof of the Torres formula.
10 pages, 2 figures