Data:K12a103/Alexander Polynomial

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle 3 t^3-20 t^2+52 t-69+52 t^{-1} -20 t^{-2} +3 t^{-3} }