Some Results on Prime Labeling

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In the present work we investigate some classes of graphs and disjoint union of some classes of graphs which admit prime labeling. We also investigate prime labeling of a graph obtained by identifying two vertices of two graphs. We also investigate prime labeling of a graph obtained by identifying two edges of two graphs. Prime labeling of a prism graph is also discussed. We show that a wheel graph of odd order is switching invariant. A necessary and sufficient condition for the complement of Wn to be a prime graph is investigated.

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Prajapati, U. and Gajjar, S. (2014) Some Results on Prime Labeling. Open Journal of Discrete Mathematics, 4, 60-66. doi: 10.4236/ojdm.2014.43009.


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