Data:L11n313/Multivariable Alexander

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