Data:L11a213/Multivariable Alexander

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[math]\displaystyle{ \frac{u^2 v^4-4 u^2 v^3+6 u^2 v^2-5 u^2 v+2 u^2-3 u v^4+7 u v^3-9 u v^2+7 u v-3 u+2 v^4-5 v^3+6 v^2-4 v+1}{u v^2} }[/math]