The coordination of graph (K_2 V k_n) · (K_2 V k_m)
Lu Xia, Xiufen Li · 2003
In this paper,for natural numbers m, n∈ N+. Let Kn is a n - verex complete graph, kn is complementary graph of graph k'n, (K2 V kn) is join graph of K2 and kn .This paper has given one kind of graph(K2 V kn) · (K2 V km) ,proves that the one kinds graph is harmonious graph when m = n -1(n≥2).