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Sibirskie Èlektronnye Matematicheskie Izvestiya [Siberian Electronic Mathematical Reports], 2016, Volume 13, Pages 1040–1051
DOI: https://doi.org/10.17377/semi.2016.13.083 (Mi semr733) 		 
This article is cited in 3 scientific papers (total in 3 papers)

Mathematical logic, algebra and number theory

On automorphisms of a distance-regular graph with intersection array $\{243,220,1;1,22,243\}$

V. V. Bitkinaa, A. K. Gutnovaa, A. A. Makhnevb

a Severo-Osetinskii State University, str. Vatutina, 46, 362000, Vladikavkaz, Russia
b N.N. Krasovsky Institute of Mathematics and Meckhanics, str. S. Kovalevskoy, 16, 620990, Ekaterinburg, Russia
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DOI: https://doi.org/10.17377/semi.2016.13.083
Abstract: It was proved that a distance-regular graph in which neighborhoods of vertices are strongly regular with parameters $(245,64,18,16)$ has intersection array $\{243,220,1;1,22,243\}$ or $\{243,220,1;1,4,243\}$. In this paper we found the automorphisms of a distance regular graph with intersection array $\{243,220,1;1,22,243\}$. It is proved that a vertex-transitive distance-regular graph with intersection array $\{243,220,1;1,22,243\}$ is the arc-transitive Mathon graph affording the group $L_2(3^5)$.
Keywords: distance-regular graph, automorphism.
Funding agency Grant number
Russian Science Foundation 15-11-10025
Ministry of Education and Science of the Russian Federation 02.A03.21.0006
Received November 9, 2016, published November 24, 2016
Bibliographic databases:
Document Type: Article
UDC: 519.17+512.54
MSC: 05C25
Language: Russian
Citation: V. V. Bitkina, A. K. Gutnova, A. A. Makhnev, “On automorphisms of a distance-regular graph with intersection array $\{243,220,1;1,22,243\}$”, Sib. Èlektron. Mat. Izv., 13 (2016), 1040–1051
Citation in format AMSBIB
\Bibitem{BitGutMak16}
\by V.~V.~Bitkina, A.~K.~Gutnova, A.~A.~Makhnev
\paper On automorphisms of a distance-regular graph with intersection array $\{243,220,1;1,22,243\}$
\jour Sib. \`Elektron. Mat. Izv.
\yr 2016
\vol 13
\pages 1040--1051
\mathnet{http://mi.mathnet.ru/semr733}
\crossref{https://doi.org/10.17377/semi.2016.13.083}
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