Data:L11a257/Multivariable Alexander

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