Data:L10n4/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 z^7-a^3 z^5+6 a z^5-z^5 a^{-1} -5 a^3 z^3+12 a z^3-4 z^3 a^{-1} +a^5 z-8 a^3 z+9 a z-4 z a^{-1} +2 a^5 z^{-1} -4 a^3 z^{-1} +3 a z^{-1} - a^{-1} z^{-1} }