[Alphabet] weight 0 noncentral x weight 0 noncentral y weight 0 noncentral z weight -1 central a weight -1 central b weight -1 central c weight -1 central m [Generators] [Relations] "- x + x^2" "- y + y^2" "- m + m^2 + 2x - 2mx + 2y - 2my + xy + yx" "- m + x + y + z" "3/4m - 5/4m^2 + 1/2m^3 - 3/2x + 5/2mx - m^2x - 3/2y + 5/2my - m^2y - 3/2xy + mxy" "m - 13/6m^2 + 3/2m^3 - 1/3m^4 - 3y + 13/2my - 9/2m^2y + m^3y" "m - 13/6m^2 + 3/2m^3 - 1/3m^4 - 3x + 13/2mx - 9/2m^2x + m^3x" "9m - 45/2m^2 + 20m^3 - 15/2m^4 + m^5"

Simpan