Data:K11a80/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^8-2 a^2 z^6-z^6 a^{-2} +5 z^6+a^4 z^4-7 a^2 z^4-3 z^4 a^{-2} +9 z^4+2 a^4 z^2-7 a^2 z^2-2 z^2 a^{-2} +5 z^2+a^4-a^2+ a^{-2} }