Data:L11a402/Multivariable Alexander

$\frac{u v^2 w^4-2 u v^2 w^3+2 u v^2 w^2-u v^2 w-2 u v w^4+5 u v w^3-7 u v w^2+4 u v w-u v+u w^4-3 u w^3+4 u w^2-3 u w+u-v^2 w^4+3 v^2 w^3-4 v^2 w^2+3 v^2 w-v^2+v w^4-4 v w^3+7 v w^2-5 v w+2 v+w^3-2 w^2+2 w-1}{\sqrt{u} v w^2}$