Data:L6a4/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^3 z^3+z^3 a^{-3} +3 a^2 z^4+3 z^4 a^{-2} -4 a^2 z^2-4 z^2 a^{-2} +a^2 z^{-2} + a^{-2} z^{-2} +2 a z^5+2 z^5 a^{-1} -a z^3-z^3 a^{-1} -2 a z^{-1} -2 a^{-1} z^{-1} +6 z^4-8 z^2+2 z^{-2} +1}