Data:K11a66/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^2 z^8+2 a^4 z^6-5 a^2 z^6+z^6-a^6 z^4+8 a^4 z^4-9 a^2 z^4+3 z^4-3 a^6 z^2+10 a^4 z^2-7 a^2 z^2+2 z^2-2 a^6+4 a^4-2 a^2+1}