Data:L11n154/Multivariable Alexander

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