Data:L8n7/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^{-7} z^{-3} - a^{-7} z^{-1} +3 a^{-5} z^{-3} +3 z a^{-5} +5 a^{-5} z^{-1} -2 z^3 a^{-3} -3 a^{-3} z^{-3} -6 z a^{-3} -7 a^{-3} z^{-1} + a^{-1} z^{-3} +3 z a^{-1} +3 a^{-1} z^{-1} }