Data:L11a155/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 a^7+2 z^3 a^5+z a^5+a^5 z^{-1} -z^5 a^3-2 z a^3-2 a^3 z^{-1} -z^5 a+z^3 a+2 z a+2 a z^{-1} +2 z^3 a^{-1} - a^{-1} z^{-1} -z a^{-3} }