Data:L11n228/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^7-7 a z^5+z^5 a^{-1} +a^5 z^3+2 a^3 z^3-15 a z^3+5 z^3 a^{-1} +a^5 z+4 a^3 z-13 a z+6 z a^{-1} +2 a^3 z^{-1} -3 a z^{-1} + a^{-1} z^{-1} }