A Note on Directed 5-Cycles in Digraphs


In this note, it is proved that if α≥0.24817, then any digraph on n vertices with minimum outdegree at least αn contains a directed cycle of length at most 5.

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H. Liang and J. Xu, "A Note on Directed 5-Cycles in Digraphs," Applied Mathematics, Vol. 3 No. 7, 2012, pp. 805-808. doi: 10.4236/am.2012.37120.

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The authors declare no conflicts of interest.


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