Data:L10a58/Multivariable Alexander

[math]\displaystyle{ \frac{u^2 v^3-4 u^2 v^2+2 u^2 v+u v^4-5 u v^3+7 u v^2-5 u v+u+2 v^3-4 v^2+v}{u v^2} }[/math]