Data:L10a12/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^7 z^{-1} -3 a^5 z-a^5 z^{-1} +3 a^3 z^3+a^3 z-a^3 z^{-1} -z a^{-3} -a z^5+2 z^3 a^{-1} +a z+2 a z^{-1} - a^{-1} z^{-1} }