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On the Problem of Determining which (nk)-Star Graphs are Cayley Graphs

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Abstract

In this paper we work to classify which of the (nk)-star graphs, denoted by \(S_{n,k}\), are Cayley graphs. Although the complete classification is left open, we derive infinite and non-trivial classes of both Cayley and non-Cayley graphs. We give a complete classification of the case when \(k=2\), showing that \(S_{n,2}\) is Cayley if and only if n is a prime power. We also give a sufficient condition for \(S_{n,3}\) to be Cayley and study other structural properties, such as demonstrating that \(S_{n,k}\) always has a uniform shortest path routing.

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Correspondence to Daniel E. Steffy.

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Cheng, E., Li, L., Lipták, L. et al. On the Problem of Determining which (nk)-Star Graphs are Cayley Graphs. Graphs and Combinatorics 33, 85–102 (2017). https://doi.org/10.1007/s00373-016-1741-8

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  • DOI: https://doi.org/10.1007/s00373-016-1741-8

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