P. K. Wong, "A regular graph of girth and valency ", International Journal of Mathematics and Mathematical Sciences, vol. 9, Article ID 673542, 5 pages, 1986. https://doi.org/10.1155/S0161171286000704
A regular graph of girth and valency
Let be the number of vertices of an -cage. By giving a regular graph of girth and valency , we show that . This is the best known upper bound for .
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