Abstract
Let G be a graph of order n. A bijection \(f:V(G) \longrightarrow \{1, 2, \ldots , n\}\) is said to be distance antimagic if for every vertex v the vertex weight defined by \(w_f(v) =\sum _{x\in N(v)}f(x)\) is distinct. The graph which admits such a labeling is called a distance antimagic graph. For a positive integer k, define \(f_{k}:V(G) \longrightarrow \{1+k,2+k, \ldots , n+k\}\) by \(f_{k}(x)=f(x)+k \). If \(w_{f_{k}}(u)\ne \ w_{f_{k}}(v)\) for every pair of vertices \(u,v \in V\), for any \(k\ge 0\) then f is said to be an arbitrarily distance antimagic labeling and the graph which admits such a labeling is said to be an arbitrarily distance antimagic graph. In this paper, we provide arbitrarily distance antimagic labelings for \(rP_n\), generalised Petersen graph \(P(n,k), \ n \ge 5\), Harary graph \(H_{4,n}\) for \(n\ne 6\) and also prove that join of these graphs is distance antimagic.
A.K. Handa—Also senior lecturer in mathematics at Padre Conceicao College of Engineering.
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Acknowledgements
The last two authors are thankful to the Department of Science and Technology, New Delhi, for its support through the Project No. SR/S4/MS-734/11. The authors are thankful to the referees for their critical comments and suggestions which enabled us to improve the presentation substantially.
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Handa, A.K., Godinho, A., Singh, T. (2016). Some Distance Antimagic Labeled Graphs. In: Govindarajan, S., Maheshwari, A. (eds) Algorithms and Discrete Applied Mathematics. CALDAM 2016. Lecture Notes in Computer Science(), vol 9602. Springer, Cham. https://doi.org/10.1007/978-3-319-29221-2_16
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DOI: https://doi.org/10.1007/978-3-319-29221-2_16
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