Data:L10a90/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^5 a^{-3} -a^3 z^3+3 z^3 a^{-3} -2 a^3 z+2 z a^{-3} -z^7 a^{-1} +2 a z^5-5 z^5 a^{-1} +7 a z^3-9 z^3 a^{-1} +6 a z-6 z a^{-1} +a z^{-1} - a^{-1} z^{-1} }