Data:K11a39/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 -2 z^6 a^{-2} -z^6+a^2 z^4-8 z^4 a^{-2} +3 z^4 a^{-4} -2 z^4+2 a^2 z^2-11 z^2 a^{-2} +9 z^2 a^{-4} -z^2 a^{-6} +a^2-5 a^{-2} +6 a^{-4} -2 a^{-6} +1}