• STRUCTURE GRACEFUL INDEX OF COMPLETE GRAPHS
Abstract
A graceful labeling of a graph G with q edges and vertex set V is an injection f: V(G) →{0,1,2,….,q} with the property that the resulting edge labels are also distinct, where an edge incident with vertices u and v is assigned the label |f(u)-f(v)|. A graph which admits a graceful labeling is called a graceful graph. In this paper we define the structure graceful index of complete graphs. Also we prove that the structure graceful index of complete graph Kn is 2 for 4 < n < 11. We extend this result to determine the structure graceful index of complete graphs for greater values of n.
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