Abstract

A decomposition of a graph G into isomorphic copies of a graph H is H-magic if there is a bijection f:V(G)∪E(G)→{0,1,…,|V(G)|+|E(G)|−1} such that the sum of labels of edges and vertices of each copy of H in the decomposition is constant. It is known that complete graphs do not admit K2-magic decompositions for n>6. By using the results on the sumset partition problem, we show that the complete graph K2m+1 admits T-magic decompositions by any graceful tree with m edges. We address analogous problems for complete bipartite graphs and for antimagic and (a,d)-antimagic decompositions.

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