Data:K12a1039/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^8-2 a^2 z^6-2 z^6 a^{-2} +5 z^6+a^4 z^4-8 a^2 z^4-8 z^4 a^{-2} +z^4 a^{-4} +9 z^4+3 a^4 z^2-9 a^2 z^2-9 z^2 a^{-2} +3 z^2 a^{-4} +6 z^2+2 a^4-2 a^2-2 a^{-2} +2 a^{-4} +1}