Data:L9n1/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^{11} z^{-1} +z^3 a^9+4 z a^9+2 a^9 z^{-1} -z^5 a^7-4 z^3 a^7-3 z a^7-z^5 a^5-4 z^3 a^5-3 z a^5-a^5 z^{-1} }