期刊名称:International Journal of Mathematics and Mathematical Sciences
印刷版ISSN:0161-1712
电子版ISSN:1687-0425
出版年度:1986
卷号:9
期号:3
页码:561-565
DOI:10.1155/S0161171286000704
出版社:Hindawi Publishing Corporation
摘要:
Let f ( 11 , 6 ) be the number of vertices of an ( 11 , 6 ) -cage. By giving a regular graph of girth 6 and valency 11 , we show that f ( 11 , 6 ) ≤ 240 . This is the best known upper bound for f ( 11 , 6 ) .