Data:L11n250/Multivariable Alexander

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