----------------------------------------------------------------------------- Loading GBNP 1.0.1 (Non-commutative Gröbner bases) by A.M. Cohen (http://www.win.tue.nl/~amc) and J.W. Knopper (J.W.Knopper@tue.nl). ----------------------------------------------------------------------------- Computing Grobner... Ready Grobner Computing Grobner... We compute lambda(z)-z otimes 1- g otimes z and take U=1: -L2g0^2g1^3y0x2x1x0 + L2g0^2g1^3y0x0x2x1 + L1g0^2g1^3y0x0x1x2 + L1g0^2g1^3y0x\ 0x1x0 + L2g0^3g2^2y2x2x1x0 + -L1g0^3g2^2y2x1x2x1 + -L2g0^3g2^2y2x1x0x2 + -L1g0\ ^3g2^2y2x0x1x2 + L1g0^3g1^2y1x1x2x1 + L2g0^3g1^2y1x1x0x2 + -L2g0^3g1^2y1x0x2x1\ + -L1g0^3g1^2y1x0x1x0 + -L2g0^3g1^3x2x1x0x2 + -L2g0^3g1^3x1x0x2x1 + -L2g0^3g1\ ^3x0x2x1x0 + L2g0^2g3^2x1x0x2x1 + L2g0^2g3^2y2y3x1x2 + L2g0^2g3^2y2y3x1x0 + L1\ g0^2g3^2y2y3x0x2 + L2g0^2g3^2y2y3x0x1 + L2g0^2g3^2y0y2x2x1 + L2g0^2g3^2y0y2x1x\ 2 + L1g0^2g3^2y0y2x0x2 + L2g0^2g3^2y0y2x0x1 + -L1g0^2g2^2y1y2x1x2 + -2*L1g0^2g\ 2^2y1y2x0x1 + L1g0^2g2^2y0y1x1x2 + -L1g0^2g2^2y0y1x0x1 + L2g0^2g1g3x0x2x1x0 + \ L1g0^2g1g3y2y1x2x1 + -L2g0^2g1g3y2y1x1x2 + L2g0^2g1g3y2y1x1x0 + L1g0^2g1g3y1y3\ x2x1 + -L2g0^2g1g3y1y3x1x2 + L2g0^2g1g3y1y3x0x2 + L2g0^2g1^2x2x1x0x2 + L1g0^2g\ 1^2y1y0x1x0 + L2g0^2g1^2y1y0x0x2 + -L2g0^2g1^2y1y0x0x1 + L2g0^2g1^2y0y3x2x1 + \ L1g0^2g1^2y0y3x1x0 + -L2g0^2g1^2y0y3x0x1 + L1^2g0^2g1^3y0x2 + L2g0^2g1^3y0x2x1\ x0 + -L1*L2g0^2g1^3y0x0 + -L2g0^2g1^3y0x0x2x1 + -L1g0^2g1^3y0x0x1x2 + -L1g0^2g\ 1^3y0x0x1x0 + -L2g0^3g2^2y2x2x1x0 + L1*L2g0^3g2^2y2x1 + L1g0^3g2^2y2x1x2x1 + L\ 2g0^3g2^2y2x1x0x2 + -L1^2g0^3g2^2y2x0 + L1g0^3g2^2y2x0x1x2 + -L1^2g0^3g1^2y1x2\ + -L1*L2g0^3g1^2y1x1 + -L1g0^3g1^2y1x1x2x1 + -L2g0^3g1^2y1x1x0x2 + L1^2+L1*L2\ g0^3g1^2y1x0 + L2g0^3g1^2y1x0x2x1 + L1g0^3g1^2y1x0x1x0 + -L1^2-2*L1*L2+2*L2^2g\ 0^3g1^3x2x1 + -L1^2-2*L1*L2+2*L2^2g0^3g1^3x1x0 + -L1^2-2*L1*L2+2*L2^2g0^3g1^3x\ 0x2 + -L1*L2g0^3g1^3x0x1 + L1g0g3^2y0y1y2x2 + -L1g0g3^2y0y1y2x0 + L1g0g2^2y0y1\ y0x1 + -L1g0g2^2y0y1y0x0 + L2g0g1g3y2x2x1x0 + -L2g0g1g3y2x1x0x2 + L2g0g1g3y1x1\ x0x2 + -L2g0g1g3y1x0x2x1 + -L2g0g1g3y0x2x1x0 + L2g0g1g3y0x0x2x1 + -L2g0g1^2y3x\ 1x2x1 + L2g0g1^2y0x1x2x1 + -L2g0g1^2y0y2y3x2 + L2g0g1^2y0y2y3x1 + 2*L1*L2g0g1^\ 3x2x1 + 2*L1^2g0g1^3x1x2 + -L2g0^2g3y3x0x1x0 + L2g0^2g3y2x0x1x0 + -L2g0^2g3y2y\ 1y3x1 + L2g0^2g3y2y1y3x0 + -L2^2g0^2g3^2x2x1 + -L2^2g0^2g3^2x1x2 + -L2^2g0^2g3\ ^2x1x0 + -L2^2g0^2g3^2x0x1 + -L2^2g0^2g3^2y2y3 + -L2g0^2g3^2y2y3x1x2 + -L2g0^2\ g3^2y2y3x1x0 + -L1g0^2g3^2y2y3x0x2 + -L2g0^2g3^2y2y3x0x1 + -L2^2g0^2g3^2y0y2 +\ -L2g0^2g3^2y0y2x2x1 + -L2g0^2g3^2y0y2x1x2 + -L1g0^2g3^2y0y2x0x2 + -L2g0^2g3^2\ y0y2x0x1 + L1g0^2g2y1y2y1x2 + -L1g0^2g2y1y2y1x1 + L1*L2g0^2g2^2x0x1 + L1*L2g0^\ 2g2^2y1y2 + L1g0^2g2^2y1y2x1x2 + 2*L1g0^2g2^2y1y2x0x1 + -L1g0^2g2^2y0y1x1x2 + \ L1g0^2g2^2y0y1x0x1 + L2g0^2g1y3x0x1x2 + -L2g0^2g1y1x0x1x2 + L2g0^2g1y1y0y3x2 +\ -L2g0^2g1y1y0y3x0 + L2^2g0^2g1g3x1x2 + -L2^2g0^2g1g3x1x0 + -L2^2g0^2g1g3x0x2 \ + -L1g0^2g1g3y2y1x2x1 + L2g0^2g1g3y2y1x1x2 + -L2g0^2g1g3y2y1x1x0 + -L1g0^2g1g3\ y1y3x2x1 + L2g0^2g1g3y1y3x1x2 + -L2g0^2g1g3y1y3x0x2 + -L2^2g0^2g1^2x2x1 + -L2^\ 2g0^2g1^2x0x2 + L2^2g0^2g1^2x0x1 + -L1g0^2g1^2y1y0x1x0 + -L2g0^2g1^2y1y0x0x2 +\ L2g0^2g1^2y1y0x0x1 + -L2g0^2g1^2y0y3x2x1 + -L1g0^2g1^2y0y3x1x0 + L2g0^2g1^2y0\ y3x0x1 + -L1^2-L1*L2+L2^2g0^2g1^3y0x2 + L1*L2-L2^2g0^2g1^3y0x1 + L1*L2g0^2g1^3\ y0x0 + L1^2g0^3g3x2x1 + L1^2g0^3g3x1x0 + L1^2g0^3g3x0x2 + -L1^2g0^3g3^2y3x2 + \ L1^2g0^3g3^2y3x0 + 2*L1*L2g0^3g2x1x0 + 2*L1^2g0^3g2x0x1 + L1*L2g0^3g2^2y2x2 + \ -2*L1*L2+L2^2g0^3g2^2y2x1 + L1^2-L2^2g0^3g2^2y2x0 + -2*L1^2g0^3g1x1x2 + 2*L1*L\ 2g0^3g1x0x2 + -2*L1^2g0^3g1x0x1 + L1^2+L1*L2-L2^2g0^3g1^2y1x2 + L1*L2g0^3g1^2y\ 1x1 + -L1^2-2*L1*L2+L2^2g0^3g1^2y1x0 + 4*L1^2*L2-L1*L2^2-L2^3g0^3g1^3 + L1^2+L\ 1*L2-L2^2g0^3g1^3x2x1 + L1^2+L1*L2-L2^2g0^3g1^3x1x0 + L1^2+L1*L2-L2^2g0^3g1^3x\ 0x2 + L1*L2g0^3g1^3x0x1 + -L2g1g3y1y2x2x1 + L2g1g3y0y2x2x1 + -L2g1g3y0y1x2x1 +\ L2g0g3y2y1x1x0 + L2g0g3y1y2x1x0 + -2*L1^2g0g3^2y3x2 + L1^2g0g3^2y1x2 + L1^2g0\ g3^2y1x0 + -L1g0g3^2y0y1y2x2 + L1g0g3^2y0y1y2x0 + L2g0g2y1y0x0x2 + L2g0g2y0y1x\ 0x2 + -2*L1^2g0g2^2y3x0 + 2*L1^2g0g2^2y2x1 + -L1*L2g0g2^2y0x1 + L1*L2g0g2^2y0x\ 0 + -L1g0g2^2y0y1y0x1 + L1g0g2^2y0y1y0x0 + L2g0g1y2y3x1x2 + 2*L2g0g1y2y3x0x1 +\ -L2g0g1y2y1x1x2 + -L2g0g1y2y1x0x1 + -2*L2g0g1y1y3x1x2 + -L2g0g1y1y3x0x1 + L2g\ 0g1y1y0x1x2 + L2g0g1y0y3x1x2 + -L2g0g1y0y3x0x1 + L2g0g1y0y2x0x1 + L2^2g0g1^2y3\ x1 + -L1*L2g0g1^2y3x0 + -2*L1*L2g0g1^2y2x2 + 2*L1*L2g0g1^2y2x1 + 2*L1*L2g0g1^2\ y1x2 + -2*L1*L2g0g1^2y1x1 + -L2^2g0g1^2y0x1 + L1*L2g0g1^2y0x0 + L2g0g1^2y0y2y3\ x2 + -L2g0g1^2y0y2y3x1 + -2*L1^2*L2g0g1^3 + -2*L1*L2g0g1^3x2x1 + -2*L1^2g0g1^3\ x1x2 + -L1*L2g0^2g3y3x2 + L2^2g0^2g3y3x0 + L1*L2g0^2g3y2x2 + -L2^2g0^2g3y2x0 +\ L2g0^2g3y2y1y3x1 + -L2g0^2g3y2y1y3x0 + -2*L1*L2g0^2g3y1x1 + 2*L1*L2g0^2g3y1x0\ + 2*L1*L2g0^2g3y0x1 + -2*L1*L2g0^2g3y0x0 + L1^2*L2+L2^3g0^2g3^2 + 2*L2^2g0^2g\ 3^2x1x2 + L2^2g0^2g3^2x1x0 + -L1*L2g0^2g3^2x0x2 + L2^2g0^2g3^2x0x1 + -L1^2+L2^\ 2g0^2g3^2y2y3 + -L1^2+L2^2g0^2g3^2y0y2 + -2*L1^2g0^2g2y3x1 + -L1*L2g0^2g2y1x2 \ + L1*L2g0^2g2y1x1 + -L1g0^2g2y1y2y1x2 + L1g0^2g2y1y2y1x1 + 2*L1^2g0^2g2y0x2 + \ -L1*L2g0^2g2^2x0x1 + -L1*L2g0^2g2^2y1y2 + -2*L1*L2g0^2g1y2x2 + 2*L1*L2g0^2g1y2\ x0 + -L2g0^2g1y1y0y3x2 + L2g0^2g1y1y0y3x0 + 2*L1*L2g0^2g1y0x2 + -2*L1*L2g0^2g1\ y0x0 + L1^2*L2g0^2g1g3 + -L1*L2g0^2g1g3x2x1 + -L2^2g0^2g1g3x1x2 + L2^2g0^2g1g3\ x1x0 + L2^2g0^2g1g3x0x2 + L2^2g0^2g1g3x0x1 + -L1^2g0^2g1g3y2y1 + -L1^2g0^2g1g3\ y1y3 + L1^2*L2g0^2g1^2 + L2^2g0^2g1^2x2x1 + -L2^2g0^2g1^2x1x2 + -L1*L2g0^2g1^2\ x1x0 + L2^2g0^2g1^2x0x2 + -2*L2^2g0^2g1^2x0x1 + -L1^2g0^2g1^2y1y0 + -L1^2g0^2g\ 1^2y0y3 + L1*L2-L2^2g0^2g1^3y0x2 + -L1*L2+L2^2g0^2g1^3y0x1 + -3*L1^2*L2+L1*L2^\ 2g0^3g3 + -L1^2g0^3g3x2x1 + -L1^2g0^3g3x1x0 + -L1^2g0^3g3x0x2 + L1^2g0^3g3^2y3\ x2 + -L1^2g0^3g3^2y3x0 + -2*L1^2*L2g0^3g2 + -2*L1*L2g0^3g2x1x0 + -2*L1^2g0^3g2\ x0x1 + -L1*L2g0^3g2^2y2x2 + L1*L2-L2^2g0^3g2^2y2x1 + L2^2g0^3g2^2y2x0 + 2*L1^2\ g0^3g1x1x2 + -2*L1*L2g0^3g1x0x2 + 2*L1^2g0^3g1x0x1 + -L1*L2+L2^2g0^3g1^2y1x2 +\ L1*L2-L2^2g0^3g1^2y1x0 + -6*L1^2*L2+3*L1*L2^2g0^3g1^3 + L2g2y1y2y3x2 + L2g2y1\ y0y2x2 + -L2g2y0y2y3x2 + L2g2y0y1y3x2 + -L2g2y0y1y0x2 + 2*L1^2g2^2y2y3 + -2*L1\ ^2g2^2y1y3 + 2*L1^2g2^2y0y2 + -2*L1^2g2^2y0y1 + -L2g1y2y1y3x1 + -L2g1y1y2y3x1 \ + L2g1y0y2y1x1 + L2g1y0y1y2x1 + 2*L1*L2g1g3x2x1 + 2*L1^2g1^2y2y1 + 2*L1^2g1^2y\ 1y3 + 2*L1^2g1^2y1y2 + -2*L1^2g1^2y0y3 + 2*L1^2g1^2y0y1 + L2g0y2y1y0x0 + -L2g0\ y1y2y1x0 + -L2g0y1y0y3x0 + -L2g0y0y1y3x0 + 2*L1*L2-L2^2g0g3x1x0 + 2*L1^2g0g3^2\ y3x2 + -L1^2g0g3^2y1x2 + -L1^2g0g3^2y1x0 + 2*L1*L2-L2^2g0g2x0x2 + 2*L1^2g0g2^2\ y3x0 + -2*L1^2g0g2^2y2x1 + L1*L2g0g2^2y0x1 + -L1*L2g0g2^2y0x0 + -L2^2g0g1y2y3 \ + L2^2g0g1y1y3 + -L2^2g0g1y1y0 + -L2^2g0g1y0y2 + L2^2g0g1g3y2x1 + -L2^2g0g1g3y\ 2x0 + -L2^2g0g1g3y1x2 + L2^2g0g1g3y1x0 + L2^2g0g1g3y0x2 + -L2^2g0g1g3y0x1 + -L\ 2^2g0g1^2y3x1 + 2*L1*L2g0g1^2y3x0 + 2*L1*L2g0g1^2y2x2 + -2*L1*L2g0g1^2y2x1 + -\ 2*L1*L2g0g1^2y1x2 + 2*L1*L2g0g1^2y1x1 + L2^2g0g1^2y0x1 + -L1*L2g0g1^2y0x0 + -2\ *L1^2g0^2y2y3 + -2*L1^2g0^2y1y2 + 2*L1^2g0^2y1y0 + 2*L1^2g0^2y0y3 + 2*L1*L2g0^\ 2g3y3x2 + -L2^2g0^2g3y3x1 + -L2^2g0^2g3y3x0 + -L1*L2g0^2g3y2x2 + L2^2g0^2g3y2x\ 1 + L2^2g0^2g3y2x0 + 2*L1*L2g0^2g3y1x1 + -2*L1*L2g0^2g3y1x0 + -2*L1*L2g0^2g3y0\ x1 + 2*L1*L2g0^2g3y0x0 + -L1*L2^2-L2^3g0^2g3^2 + 2*L1^2g0^2g2y3x1 + L1*L2g0^2g\ 2y1x2 + -L1*L2g0^2g2y1x1 + -2*L1^2g0^2g2y0x2 + -L1^2*L2g0^2g2^2 + -L2^2g0^2g1y\ 3x2 + L1*L2g0^2g1y3x1 + -L2^2g0^2g1y3x0 + 2*L1*L2g0^2g1y2x2 + -2*L1*L2g0^2g1y2\ x0 + L2^2g0^2g1y1x2 + -L1*L2g0^2g1y1x1 + -2*L1*L2g0^2g1y0x2 + 2*L1*L2g0^2g1y0x\ 0 + -L1*L2^2g0^2g1g3 + -L1*L2^2+L2^3g0^2g1^2 + 6*L1^2*L2-L1*L2^2g0^3g3 + 2*L1^\ 2*L2g0^3g2 + -2*L1^2*L2g0^3g1 + -2*L1*L2g2y3x2 + -L1*L2g2y2x2 + 2*L1*L2-L2^2g2\ y1x2 + L2^2g2y0x2 + L1^2*L2g2^2 + -2*L1*L2+L2^2g1y3x1 + 2*L1*L2-L2^2g1y0x1 + -\ L1^2*L2g1^2 + -2*L1*L2+L2^2g0y3x0 + 2*L1*L2-L2^2g0y2x0 + L2^2g0y1x0 + -L1*L2g0\ y0x0 + L1*L2^2g0g1 + L1^2*L2g0^2 Recall that gamma(z)=z - L2 z' - L2(L1-L2)z'' We compute lambda(z')- z' otimes 1 - g otimes z' and take U=1: - g0^3g1^3x2x1x0x2 - g0^3g1^3x1x0x2x1 - g0^3g1^3x0x2x1x0 + g0^2g3^2x1x0x2x1 +\ g0^2g1g3x0x2x1x0 + g0^2g1^2x2x1x0x2 + g0g1g3y2x2x1x0 - g0g1g3y2x1x0x2 + g0g1g\ 3y1x1x0x2 - g0g1g3y1x0x2x1 - g0g1g3y0x2x1x0 + g0g1g3y0x0x2x1 - g0g1^2y3x1x2x1 \ + g0g1^2y0x1x2x1 - g0^2g3y3x0x1x0 + g0^2g3y2x0x1x0 + g0^2g1y3x0x1x2 - g0^2g1y1\ x0x1x2 - g1g3y1y2x2x1 + g1g3y0y2x2x1 - g1g3y0y1x2x1 + g0g3y2y1x1x0 + g0g3y1y2x\ 1x0 + g0g2y1y0x0x2 + g0g2y0y1x0x2 + g0g1y2y3x1x2 + 2g0g1y2y3x0x1 - g0g1y2y1x1x\ 2 - g0g1y2y1x0x1 - 2g0g1y1y3x1x2 - g0g1y1y3x0x1 + g0g1y1y0x1x2 + g0g1y0y3x1x2 \ - g0g1y0y3x0x1 + g0g1y0y2x0x1 + -L2g0^2g3^2x2x1 + L2g0^2g3^2x1x2 + -L1g0^2g3^2\ x0x2 + -L1g0^2g1g3x2x1 + L2g0^2g1g3x0x1 + -L2g0^2g1^2x1x2 + -L1g0^2g1^2x1x0 + \ -L2g0^2g1^2x0x1 + g2y1y2y3x2 + g2y1y0y2x2 - g2y0y2y3x2 + g2y0y1y3x2 - g2y0y1y0\ x2 - g1y2y1y3x1 - g1y1y2y3x1 + g1y0y2y1x1 + g1y0y1y2x1 + g0y2y1y0x0 - g0y1y2y1\ x0 - g0y1y0y3x0 - g0y0y1y3x0 + L2g0g1g3y2x1 + -L2g0g1g3y2x0 + -L2g0g1g3y1x2 + \ L2g0g1g3y1x0 + L2g0g1g3y0x2 + -L2g0g1g3y0x1 + L1g0g1^2y3x0 + L1g0^2g3y3x2 + -L\ 2g0^2g3y3x1 + L2g0^2g3y2x1 + -L2g0^2g1y3x2 + L1g0^2g1y3x1 + -L2g0^2g1y3x0 + L2\ g0^2g1y1x2 + -L1g0^2g1y1x1 + L1g2^2y0y3 + L1+L2g1g3x2x1 + L1g1^2y2y3 + L1g0g3x\ 1x0 + L1g0g2x0x2 + -L2g0g1y2y3 + L2g0g1y2y1 + L2g0g1y1y3 + L1g0^2y1y3 + L2^2g0\ ^2g1^2 + -L1-L2g2y3x2 + -L1g2y2x2 + L1g2y1x2 + L2g2y0x2 + -L1g1y3x1 + L1g1y0x1\ + -L1g0y3x0 + L1g0y2x0 + L2g0y1x0 + -L1g0y0x0 + -L2^2g0g1 We compute lambda(z'')- z'' otimes 1 - g otimes z'' and take U=1: - g0^3g1^3x2x1 - g0^3g1^3x1x0 - g0^3g1^3x0x2 + g1g3x2x1 + g0g3x1x0 + g0g2x0x2\ - g2y3x2 + g2y1x2 - g1y3x1 + g1y0x1 - g0y3x0 + g0y2x0 Finally, lambda ( gamma(z) ) - gamma(z) otimes 1 - g otimes gamma(z) is: -L1^2g0^2g3^2y2y3 + -L1^2g0^2g3^2y0y2 + -L1^2g0^2g1g3y2y1 + -L1^2g0^2g1g3y1y3\ + -L1^2g0^2g1^2y1y0 + -L1^2g0^2g1^2y0y3 + -2*L1^2*L2+2*L1*L2^2-L2^3g0^3g1^3 +\ 2*L1^2g2^2y2y3 + -2*L1^2g2^2y1y3 + -L1*L2g2^2y0y3 + 2*L1^2g2^2y0y2 + -2*L1^2g\ 2^2y0y1 + -L1*L2g1^2y2y3 + 2*L1^2g1^2y2y1 + 2*L1^2g1^2y1y3 + 2*L1^2g1^2y1y2 + \ -2*L1^2g1^2y0y3 + 2*L1^2g1^2y0y1 + -L2^2g0g1y2y1 + -L2^2g0g1y1y0 + -L2^2g0g1y0\ y2 + -2*L1^2*L2g0g1^3 + -2*L1^2g0^2y2y3 + -L1*L2g0^2y1y3 + -2*L1^2g0^2y1y2 + 2\ *L1^2g0^2y1y0 + 2*L1^2g0^2y0y3 + L1^2*L2-L1*L2^2g0^2g3^2 + -L1^2*L2g0^2g2^2 + \ L1^2*L2-L1*L2^2g0^2g1g3 + L1^2*L2-L1*L2^2g0^2g1^2 + 3*L1^2*L2g0^3g3 + -2*L1^2*\ L2g0^3g1 + L1^2*L2g2^2 + -L1^2*L2g1^2 + L1*L2^2+L2^3g0g1 + L1^2*L2g0^2 gap> quit;