Data:K12a1108/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^4 a^6-2 z^2 a^6-a^6+z^6 a^4+2 z^4 a^4+2 z^2 a^4+a^4+2 z^6 a^2+5 z^4 a^2+3 z^2 a^2+z^6+2 z^4+2 z^2+2-z^4 a^{-2} -2 z^2 a^{-2} - a^{-2} }