Data:L11a495/HOMFLYPT 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^6 \left(-z^2\right)-a^6+2 a^4 z^4+3 a^4 z^2+a^4-a^2 z^6-a^2 z^4+z^4 a^{-2} +a^2 z^2+a^2 z^{-2} +z^2 a^{-2} + a^{-2} z^{-2} +3 a^2+2 a^{-2} -z^6-2 z^4-4 z^2-2 z^{-2} -5}