Data:L11n308/Multivariable Alexander

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