Data:L11a120/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^{13} z^{-1} +3 z a^{11}+a^{11} z^{-1} -2 z^3 a^9+2 z a^9+2 a^9 z^{-1} -5 z^3 a^7-6 z a^7-2 a^7 z^{-1} -3 z^3 a^5-z a^5-z^3 a^3}