Data:K15a76529/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 7 t^3-53 t^2+151 t-209+151 t^{-1} -53 t^{-2} +7 t^{-3} }