local i, result; i := E(4); result := rec(); result.comment := "U33 as 7 x 7 matrices\n\ "; result.symmetricforms := [ ]; result.antisymmetricforms := [ ]; result.hermitianforms := [ ]; result.centralizeralgebra := [ ]; result.generators := [ [[0,1,0,0,0,0,0], [1,0,0,0,0,0,0], [0,0,0,1,0,0,0], [0,0,1,0,0,0,0], [1+i,-1-i,-1,1,1,0,0], [0,0,0,0,0,1,0], [0,0,i,-i,0,0,1]] , [[0,0,1,0,0,0,0], [1,0,0,0,0,0,0], [0,0,0,0,1,0,0], [0,0,0,0,0,1,0], [0,0,0,0,0,0,1], [0,-i,-i,-1,0,-1,-i], [-1,1,1,0,-1,0,1]]]; return result;