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Combinatorica versus new graphs in V8

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  • Subject: [mg132474] Combinatorica versus new graphs in V8
  • From: "E. Martin-Serrano" <eMartinSerrano at>
  • Date: Wed, 26 Mar 2014 03:23:09 -0400 (EDT)
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I am unable to see how to  implement multi edge graphs for pairs of vertices
in V8.

With the =91Combinatorica=92 package this was easy to do as in

<< Combinatorica`

g = Combinatorica`Graph[{{{1, 2}}, {{2, 3}}, {{2, 3}}, {{2, 3}} , {{2, 3}}},
{{{0, 0}}, {{1, 1}}, {{2, 0}}}]


Here I have three =91{2,3}=92 concurrent edges for the  vertices pair {2,3}

The following should be equivalent for the V8  kernel implementation of

System`Graph[{UndirectedEdge[1,2], UndirectedEdge[2,3], UndirectedEdge[2,3],
UndirectedEdge[2,3], UndirectedEdge[2,3]},

 VertexCoordinates -> {{0, 0}, {1, 1}, {2, 0}}]

But the multiple edges feature does not work in the way it did in
=91Combinatorica=92 (It does not work in any way).

Please, could anyone say what I am missing here?

E. Martin


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