Second neighbourhoods of strongly regula
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A.D. Gardiner; C.D. Godsil; A.D. Hensel; Gordon F. Royle
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Article
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1992
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Elsevier Science
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English
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## Some antipodal distance-regular graphs of diameter three arise as the graph induced by the vertices at distance two from a given vertex in a strongly regular graph. We show that if every vertex in a strongly regular graph G has this property, then G is the noncollinearity graph of a special typ