Data:L9n12/Kauffman 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 z^7-z^7 a^{-1} -z^6 a^{-2} -z^6+7 a z^5+8 z^5 a^{-1} -z^5 a^{-5} +7 z^4 a^{-2} -z^4 a^{-4} -z^4 a^{-6} +7 z^4-15 a z^3-19 z^3 a^{-1} -z^3 a^{-3} +3 z^3 a^{-5} -13 z^2 a^{-2} +2 z^2 a^{-4} +3 z^2 a^{-6} -12 z^2+12 a z+16 z a^{-1} +3 z a^{-3} -z a^{-5} +5 a^{-2} - a^{-6} +5-3 a z^{-1} -5 a^{-1} z^{-1} -2 a^{-3} z^{-1} }