Valency of Distance-regular Antipodal Gr
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Ε tefko MiklaviΔ
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Article
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2002
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Elsevier Science
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English
β 141 KB
Let G be a non-bipartite strongly regular graph on n vertices of valency k. We prove that if G has a distance-regular antipodal cover of diameter 4, then k β€ 2(n + 1)/5 , unless G is the complement of triangular graph T (7), the folded Johnson graph J (8, 4) or the folded halved 8-cube. However, for