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Nonexistence of almost Moore digraphs of diameter four
(2013-03-31)
Article
Accés obertRegular digraphs of degree d > 1, diameter k > 1 and order N(d; k) = d+ +dk will be called almost Moore (d; k)-digraphs. So far, the problem of their existence has only been solved when d = 2; 3 or k = 2; 3. In this ...