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math.CO2010★ 13 cited
The competition numbers of Hamming graphs with diameter at most three
Boram Park, Yoshio Sano
The competition graph of a digraph D is a graph which has the same vertex set as D and has an edge between x and y if and only if there exists a vertex v in D such that (x,v) and (…
math.CO2008
Double-critical graphs and complete minors
Ken-ichi Kawarabayashi, Anders Sune Pedersen, Bjarne Toft
A connected -chromatic graph is double-critical if for all edges of the graph is -colourable. The only known double-critical -chromatic graph…