Carpathian Journal of Mathematics, Vol. 34, No. 2 (2018), pp. 143-155 (13 pages) In the paper, we extend known results concerning crossing numbers for join of graphs of order six. We give the crossing ...
Taiwanese Journal of Mathematics, Vol. 6, No. 2 (June 2002), pp. 261-267 (7 pages) Consider n disjoint triangles and a cycle on the 3n vertices of the n triangles. In 1986, Du, Hsu, and Hwang ...
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