Data:L8n1/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 3 a^7 z-a^7 z^{-1} +a^6 z^4+2 a^5 z^5-6 a^5 z^3+7 a^5 z-2 a^5 z^{-1} +a^4 z^6-2 a^4 z^4+a^4 z^2-a^4+3 a^3 z^5-10 a^3 z^3+8 a^3 z-2 a^3 z^{-1} +a^2 z^6-3 a^2 z^4+a^2 z^2+a z^5-4 a z^3+4 a z-a z^{-1} }