Automorphisms of Terwilliger graphs with u = 2

• Autores: Alexander L. Gavrilyuk, Wenbin Guo, A. A. Makhnev
• Localización: Algebra and logic, ISSN 0002-5232, Vol. 47, Nº. 5, 2008, págs. 330-339
• Idioma: inglés
• DOI: 10.1007/s10469-008-9024-y
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• Resumen

  • A description is furnished for automorphisms of prime order and subgraphs of their fixed points in distance-regular graphs with intersection arrays {50, 42, 1; 1, 2, 50} and {50, 42, 9; 1, 2, 42}. It is proved that these graphs cannot be vertex-transitive.