In 1990, Hartsfield and Ringel introduced antimagic graphs. Hartsfield and Ringel conjectured that every connected graph (and in particular, a tree) except K₂ is antimagic. In 2010, Hefetz et al. \ raised two questions: Is every orientation of any simple connected undirected graph antimagic? and Given any undirected graph G, does there exist an orientation of G which is antimagic? They call such an orientation an antimagic orientation of G. Recently, Bhavale provided an edge labeling for a given graph on n vertices without isolated vertices. In this paper, using the labeling of Bhavale, we prove that a complete graph Kₙ for n 3 is super antimagic as well as totally antimagic total graph. We also prove that there exists an antimagic orientation of Kₙ for n 3.
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Dr A. N. Bhavale (Wed,) studied this question.
www.synapsesocial.com/papers/68f6379bb481a140a36cf6e7 — DOI: https://doi.org/10.48550/arxiv.2506.15221
Dr A. N. Bhavale
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