Data:L11a139/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 -z^7 a^{-1} +2 a z^5-3 z^5 a^{-1} +2 z^5 a^{-3} -a^3 z^3+3 a z^3-5 z^3 a^{-1} +4 z^3 a^{-3} -z^3 a^{-5} -3 z a^{-1} +3 z a^{-3} -z a^{-5} +a^3 z^{-1} -a z^{-1} }