Data:L9n5/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^7-3 z a^7-2 a^7 z^{-1} +z^5 a^5+5 z^3 a^5+9 z a^5+5 a^5 z^{-1} -2 z^3 a^3-6 z a^3-3 a^3 z^{-1} }