Data:L8a6/HOMFLYPT 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 a^5 z^{-1} -2 z a^3-a^3 z^{-1} +z^3 a+z^3 a^{-1} +z a^{-1} -z a^{-3} }