Abstract
An antimagic labeling of a graph with p vertices and q edges is a bijection from the set of edges to the set of integers {1, 2, . . . , q} such that all vertex weights are pairwise distinct, where a vertex weight is the sum of labels of all edges incident with the vertex. A graph is antimagic if it has an antimagic labeling. In 1990, Hartsfield and Ringel conjectured that that every connected graph, except K 2, is antimagic. Recently, using completely separating systems, Phanalasy et al. showed that for each \({k\geq 2,\,q\geq\binom{k+1}{2}}\) with k|2q, there exists an antimagic k-regular graph with q edges and p = 2q/k vertices. In this paper we prove constructively that certain families of Cartesian products of regular graphs are antimagic.
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Phanalasy, O., Miller, M., Iliopoulos, C.S. et al. Construction of Antimagic Labeling for the Cartesian Product of Regular Graphs. Math.Comput.Sci. 5, 81–87 (2011). https://doi.org/10.1007/s11786-011-0084-3
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DOI: https://doi.org/10.1007/s11786-011-0084-3