Data:K11a47/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^6-2 z^6 a^{-2} +6 z^6-4 a^2 z^4-9 z^4 a^{-2} +z^4 a^{-4} +16 z^4-7 a^2 z^2-15 z^2 a^{-2} +3 z^2 a^{-4} +22 z^2-5 a^2-9 a^{-2} +2 a^{-4} +13}