Data:10 118/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 t^4-5 t^3+12 t^2-19 t+23-19 t^{-1} +12 t^{-2} -5 t^{-3} + t^{-4} }