... 15. Finally, let us also consider the subgraph˙G×+ of G×+defined as follows: The vertex -set of ˙G×+is again the set of positive integers, and n joined to m if for some distinct x, ... large integers .Theorem3.1. The graph G×+contains -bundles for arbitrarily large integers .Inpar-ticular, for any positive integer , the graph G×+contains subgraphs of the following ... 919072558404000 the electronic journal of combinatorics 11 (2004), #R6 6Let us state this problem in terms of graphs: Let G×+=(N,E) be the graph on the vertex -set the positive integers N,with(n,...