Data:10 150/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^{-4} +z^4 a^{-2} -4 z^4 a^{-4} +z^4 a^{-6} +3 z^2 a^{-2} -4 z^2 a^{-4} +2 z^2 a^{-6} +2 a^{-2} - a^{-4} }