Data:L9n1/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^{12} z^2-2 a^{12}+a^{11} z^3-a^{11} z+a^{11} z^{-1} +a^{10} z^6-5 a^{10} z^4+10 a^{10} z^2-5 a^{10}+a^9 z^7-5 a^9 z^5+9 a^9 z^3-5 a^9 z+2 a^9 z^{-1} +2 a^8 z^6-8 a^8 z^4+9 a^8 z^2-3 a^8+a^7 z^7-4 a^7 z^5+4 a^7 z^3-a^7 z+a^6 z^6-3 a^6 z^4+a^6+a^5 z^5-4 a^5 z^3+3 a^5 z-a^5 z^{-1} }