Data:L11a168/Multivariable Alexander

[math]\displaystyle{ \frac{u^2 v^6-3 u^2 v^5+4 u^2 v^4-4 u^2 v^3+3 u^2 v^2-u^2 v-u v^6+4 u v^5-7 u v^4+7 u v^3-7 u v^2+4 u v-u-v^5+3 v^4-4 v^3+4 v^2-3 v+1}{u v^3} }[/math]