HARARY INDEX OF DOUBLE TREE
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Abstract
The Harary index is defined as the sum of reciprocals of distances between all pairs of vertices of a connected graph. In this paper double tree of some of the trees such as P, KÂ , BÂ and PÂ are considered and their Harary index are determined.
Keywords: Â distance, Harary index , path , star. Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
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