Data:L11a219/Multivariable Alexander

[math]\displaystyle{ \frac{u^2 v^4-3 u^2 v^3+3 u^2 v^2-3 u^2 v+2 u^2-3 u v^4+7 u v^3-7 u v^2+7 u v-3 u+2 v^4-3 v^3+3 v^2-3 v+1}{u v^2} }[/math]