Data:L11n131/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^{-3} +z^5 a^{-1} -6 z^5 a^{-3} +z^5 a^{-5} +4 z^3 a^{-1} -13 z^3 a^{-3} +4 z^3 a^{-5} +6 z a^{-1} -12 z a^{-3} +5 z a^{-5} +3 a^{-1} z^{-1} -5 a^{-3} z^{-1} +2 a^{-5} z^{-1} }