Data:L7a1/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^3 a^{-3} -z a^{-3} +z^5 a^{-1} -a z^3+3 z^3 a^{-1} -a z+2 z a^{-1} +a z^{-1} - a^{-1} z^{-1} }