Data:K12a1092/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} -3 z^6 a^{-2} +2 z^6 a^{-4} +2 z^6-a^2 z^4-3 z^4 a^{-2} +5 z^4 a^{-4} -z^4 a^{-6} +5 z^4-2 a^2 z^2-2 z^2 a^{-2} +3 z^2 a^{-4} -2 z^2 a^{-6} +4 z^2-a^2- a^{-2} +3}