Data:K11n62/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^4-2 z^2 a^2-2 a^2+z^4+z^2+1+z^4 a^{-2} +2 z^2 a^{-2} +2 a^{-2} -z^2 a^{-4} - a^{-4} }