A short proof of a theorem of Bang and Koolen
نویسندگان
چکیده
Let a graph Γ be locally disjoint union of three copies of complete graphs Kq−1 and let Γ be cospectral with the Hamming graph H(3, q). Bang and Koolen [Asian-Eur. J. Math. 1 (2008), 147–156] proved that if q > 3, then Γ is isomorphic to H(3, q). We present a short proof of this result. AMS Mathematics Subject Classification (2000): 05C50, 05E30.
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عنوان ژورنال:
- Eur. J. Comb.
دوره 31 شماره
صفحات -
تاریخ انتشار 2010