Data:K11a19/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} -5 z^6 a^{-2} +2 z^6 a^{-4} +z^6-11 z^4 a^{-2} +7 z^4 a^{-4} -z^4 a^{-6} +3 z^4-12 z^2 a^{-2} +9 z^2 a^{-4} -2 z^2 a^{-6} +4 z^2-5 a^{-2} +4 a^{-4} - a^{-6} +3}