On the behaviour of Colin
نویسنده
چکیده
For any connected undirected graph G, let (G) be the graph invariant introduced by Colin de Verdi ere. In this paper we study the behaviour of (G) under clique sums of graphs. In particular, we give a forbidden minor characterization of those clique sums G of G 1 and G 2 for which (G) = maxf(G 1); (G 2)g.
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تاریخ انتشار 2007