Data:K11a85/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^6 a^{-2} +z^6 a^{-4} +3 z^4 a^{-2} +2 z^4 a^{-4} -2 z^4 a^{-6} -z^4+5 z^2 a^{-2} +2 z^2 a^{-4} -3 z^2 a^{-6} +z^2 a^{-8} -2 z^2+3 a^{-2} - a^{-6} -1}