Data:K12a100/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+21 t^2-53 t+71-53 t^{-1} +21 t^{-2} -3 t^{-3} }