-- -*- M2-comint -*- hash: 16756758708032481317

i1 : G = comparabilityGraph booleanLattice 5;

i2 : isComparabilityGraph G

o2 = true

i3 : G = graph {{1,2}, {2,3}, {3,4}, {4,5}, {1,5}};

i4 : isComparabilityGraph G

o4 = false

i5 : 
