Data:L9n13/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 -z^5 a^7+3 z^3 a^7-z a^7-2 z^6 a^6+7 z^4 a^6-5 z^2 a^6-z^7 a^5+2 z^5 a^5+z a^5-3 z^6 a^4+9 z^4 a^4-7 z^2 a^4-z^7 a^3+3 z^5 a^3-6 z^3 a^3+4 z a^3+a^3 z^{-1} -z^6 a^2+2 z^4 a^2-3 z^2 a^2-a^2-3 z^3 a+2 z a+a z^{-1} -z^2}