Data:K11a230/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 -z^4 a^{-2} -z^4 a^{-4} -z^4 a^{-6} -z^2 a^{-2} -z^2 a^{-6} +2 z^2 a^{-8} +z^2- a^{-6} +2 a^{-8} - a^{-10} +1}