Data:L11a501/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^4 z^4+2 a^4 z^2-z^2 a^{-4} +2 a^4 z^{-2} +3 a^4- a^{-4} -a^2 z^6-3 a^2 z^4+2 z^4 a^{-2} -7 a^2 z^2+3 z^2 a^{-2} -5 a^2 z^{-2} - a^{-2} z^{-2} -9 a^2+ a^{-2} -z^6-z^4+2 z^2+4 z^{-2} +6}