Data:K12a1050/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^8-a^2 z^6-3 z^6 a^{-2} +4 z^6-2 a^2 z^4-8 z^4 a^{-2} +3 z^4 a^{-4} +8 z^4-2 a^2 z^2-9 z^2 a^{-2} +4 z^2 a^{-4} -z^2 a^{-6} +5 z^2+a^2-3 a^{-2} +2 a^{-4} +1}