Data:L11a540/Multivariable Alexander

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