Data:L11a416/Multivariable Alexander

[math]\displaystyle{ \frac{u v^2 w^2-3 u v^2 w+2 u v^2-3 u v w^2+8 u v w-4 u v+2 u w^2-4 u w+2 u-2 v^2 w^2+4 v^2 w-2 v^2+4 v w^2-8 v w+3 v-2 w^2+3 w-1}{\sqrt{u} v w} }[/math]