-- -*- M2-comint -*- {* hash: -1498977073 *}

i1 : R = QQ[w,x,y,z];

i2 : G = graph(R, {{w,x},{w,y},{w,z},{y,z}});

i3 : vertices G

o3 = {w, x, y, z}

o3 : List

i4 : edges G

o4 = {{w, x}, {w, y}, {w, z}, {y, z}}

o4 : List

i5 : ring G

o5 = R

o5 : PolynomialRing

i6 :