A Distance-Regular Graph with Intersection Array

@inproceedings{FonDerFlaass2003ADG,
  title={A Distance-Regular Graph with Intersection Array},
  author={Dmitry Fon-Der-Flaass},
  year={2003}
}
We prove that a distance-regular graph with intersection array (5, 4, 3, 3; 1, 1, 1, 2) does not exist. The proof is purely combinatorial and computer-free. 

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Distance-Regular Graphs, Springer-Verlag, Berlin

  • A. E. Brouwer, A. M. Cohen, A. Neumaier
  • 1989
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