Data:L10a52/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^7 a^{-1} +2 a z^5-4 z^5 a^{-1} +z^5 a^{-3} -a^3 z^3+5 a z^3-6 z^3 a^{-1} +2 z^3 a^{-3} -a^3 z+2 a z-3 z a^{-1} +z a^{-3} +a^3 z^{-1} -a z^{-1} }