Data:K12a1007/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^2 z^8-z^8+a^4 z^6-4 a^2 z^6+z^6 a^{-2} -5 z^6+3 a^4 z^4-3 a^2 z^4+4 z^4 a^{-2} -9 z^4+a^4 z^2+3 a^2 z^2+4 z^2 a^{-2} -8 z^2-a^4+3 a^2+ a^{-2} -2}