Data:K11a82/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 -a^2 z^8+a^4 z^6-6 a^2 z^6+2 z^6+4 a^4 z^4-14 a^2 z^4-z^4 a^{-2} +9 z^4+5 a^4 z^2-15 a^2 z^2-3 z^2 a^{-2} +13 z^2+2 a^4-6 a^2-2 a^{-2} +7}