Zobrazeno 1 - 2
of 2
pro vyhledávání: '"Firke, Frank A."'
We prove an upper bound for the number of edges a C4-free graph on q^2 + q vertices can contain for q even. This upper bound is achieved whenever there is an orthogonal polarity graph of a plane of even order q.
Comment: 9 pages
Comment: 9 pages
Externí odkaz:
http://arxiv.org/abs/1201.4912
Publikováno v:
In Journal of Combinatorial Theory, Series B May 2013 103(3):327-336
