Data:L10a155/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^6-3 z^2 a^4-2 a^4+3 z^4 a^2+5 z^2 a^2+a^2 z^{-2} +4 a^2-z^6-3 z^4-7 z^2-2 z^{-2} -6+z^4 a^{-2} +z^2 a^{-2} + a^{-2} z^{-2} +3 a^{-2} }