ellipticcovers.lib
LIB "ellipticcovers.lib"; ring R=(0,x1,x2,x3,x4),(q1,q2,q3,q4,q5,q6),dp; graph G = makeGraph(list(1,2,3,4),list(list(1,3),list(1,2),list(1,2),list(2,4),list(3,4),list(3,4))); G; ==> [[1, 3], [1, 2], [1, 2], [2, 4], [3, 4], [3, 4]] ==> Graph with 4 vertices and 6 edges ==>