Data:K12a1064/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 -2 t^4+9 t^3-21 t^2+33 t-37+33 t^{-1} -21 t^{-2} +9 t^{-3} -2 t^{-4} }