Let S k+1 denote a star with k edges. Tarsi and Yamamoto et al. have
characterized the S k+1 –decomposability of Kn the complete graph. In this paper we
study the edge decomposition of both Kn and the complete bipartite graph K m,n into
copies of the union of two edge disjoint stars S p+1 and S q+1 where p ≠q and p,q 2
and obtain the necessary and sufficient conditions for the Sp+1∪Sq+1-decomposability
of Kn and Km,n.
Keywords: Decomposition, Complete graphs, Star