simplexRing(C)
The underlying polynomial ring of C.
i1 : R=QQ[x_0..x_4];
i2 : C=simplex R;
i3 : simplexRing C o3 = R o3 : PolynomialRing
i4 : R.grading 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