grading(C)
Returns C.simplexRing.grading. The output has the coordinates of the vertices of C in its rows.
i1 : R=QQ[x_0..x_4] o1 = R o1 : PolynomialRing
i2 : I=ideal(x_0*x_1,x_1*x_2,x_2*x_3,x_3*x_4,x_4*x_0) o2 = ideal (x x , x x , x x , x x , x x ) 0 1 1 2 2 3 3 4 0 4 o2 : Ideal of R
i3 : C=idealToComplex I;
i4 : grading C o4 = | -1 -1 -1 -1 | | 1 0 0 0 | | 0 1 0 0 | | 0 0 1 0 | | 0 0 0 1 | 5 4 o4 : Matrix ZZ <-- ZZ