-- -*- M2-comint -*- {* hash: -983320725 *} i1 : R = QQ[a..e]; i2 : C = cycle R; i3 : UnmixedTree = graph {a*b, b*c, c*d}; i4 : MixedTree = graph {a*b, a*c, a*d}; i5 : isCM C o5 = true i6 : isCM UnmixedTree o6 = true i7 : isCM MixedTree o7 = false i8 :