Abstract

Let L be an alternating two-component link with Alexander polynomial Δ(x,y). Then the polynomials (1x)Δ(x,y) and (1y)Δ(x,y) are alternating. That is, (1y)Δ(x,y) can be written as i,jcijxiyj in such a way that (1)i+jcij0.