26 citations · 161 across the 33 of their papers we have counts for
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math.CO2012★ 4 cited
Fat Hoffman graphs with smallest eigenvalue greater than -3
Akihiro Munemasa, Yoshio Sano, Tetsuji Taniguchi
In this paper, we give a combinatorial characterization of the special graphs of fat Hoffman graphs containing with smallest eigenvalue greater than -3, where…
math.CO2012★ 5 cited
A generalization of Opsut's lower bounds for the competition number of a graph
Yoshio Sano
The notion of a competition graph was introduced by J. E. Cohen in 1968. The competition graph C(D) of a digraph is a (simple undirected) graph which has the same vertex set as…