Data:K15a76662/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 -5 t^4+31 t^3-78 t^2+126 t-147+126 t^{-1} -78 t^{-2} +31 t^{-3} -5 t^{-4} }