Data:L11a20/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-a^7 z^{-1} +3 z^3 a^5+6 z a^5+3 a^5 z^{-1} -3 z^5 a^3-9 z^3 a^3-10 z a^3-3 a^3 z^{-1} +z^7 a+4 z^5 a+8 z^3 a+7 z a+2 a z^{-1} -z^5 a^{-1} -2 z^3 a^{-1} -2 z a^{-1} - a^{-1} z^{-1} }