Data:K11a16/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^6-z^6+a^4 z^4-3 a^2 z^4+2 z^4 a^{-2} -2 z^4+2 a^4 z^2-5 a^2 z^2+4 z^2 a^{-2} -z^2 a^{-4} -2 z^2+2 a^4-3 a^2+3 a^{-2} - a^{-4} }