Data:K11a199/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^2 a^6+a^6-2 z^4 a^4-3 z^2 a^4+z^6 a^2+z^4 a^2-3 z^2 a^2-3 a^2+z^6+3 z^4+4 z^2+3-z^4 a^{-2} -2 z^2 a^{-2} }