Abstract
Given a connected simple graph \(G=(V,E)\) and a positive integer k, a set \(S\subseteq V\) is said to be a k-metric generator for G if and only if for any pair of different vertices \(u,v\in V\), there exist at least k vertices \(w_1,w_2,\ldots ,w_k\in S\) such that \(d_G(u,w_i)\ne d_G(v,w_i)\), for every \(i\in \{1,\ldots ,k\}\), where \(d_G(x,y)\) is the length of a shortest path between x and y. A k-metric generator of minimum cardinality in G is called a k-metric basis and its cardinality, the k-metric dimension of G. In this article, we study the k-metric dimension of corona product graphs \(G\odot \mathcal {H}\), where G is a graph of order n and \(\mathcal {H}\) is a family of n non-trivial graphs. Specifically, we give some necessary and sufficient conditions for the existence of a k-metric basis in a connected corona graph. Moreover, we obtain tight bounds and closed formulae for the k-metric dimension of connected corona graphs.
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Communicated by Xueliang Li.
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Estrada-Moreno, A., Yero, I.G. & Rodríguez-Velázquez, J.A. The k-Metric Dimension of Corona Product Graphs. Bull. Malays. Math. Sci. Soc. 39 (Suppl 1), 135–156 (2016). https://doi.org/10.1007/s40840-015-0282-2
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DOI: https://doi.org/10.1007/s40840-015-0282-2
Keywords
- k-Metric generator
- k-Metric dimension
- k-Metric basis
- k-Metric dimensional graphs
- Corona product graphs