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Cayley digraphs and lexicographic product |
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| Authors: | Xing Peng Dianjun Wang |
| Institution: | (1) Department of Mathematical Sciences, Tsinghua University, Beijing, 100084, China |
| Abstract: | In this paper, we prove that a Cayley digraph Γ = Cay(G, S) is a nontrivial lexicographical product if and only if there is a nontrivial subgroup H of G such that S∖H is a union of some double cosets of H in G. |
| Keywords: | Cayley graph lexicoproduct of graphs double coset |
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