Data:L11n117/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^3 a^7+z a^7-a^7 z^{-1} -z^5 a^5-z^3 a^5+3 z a^5+4 a^5 z^{-1} -2 z^5 a^3-7 z^3 a^3-9 z a^3-4 a^3 z^{-1} +2 z^3 a+3 z a+a z^{-1} }