Data:L11a171/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^7 z^5+a^7 z^3-a^5 z^7-2 a^5 z^5-a^5 z^3-a^3 z^7-2 a^3 z^5-a^3 z^3+a^3 z^{-1} +a z^5+a z^3-a z-a z^{-1} }