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Sibirskie Èlektronnye Matematicheskie Izvestiya [Siberian Electronic Mathematical Reports], 2019, Volume 16, Pages 777–785
DOI: https://doi.org/10.33048/semi.2019.16.052
(Mi semr1094)
 

Discrete mathematics and mathematical cybernetics

On automorphisms of a distance-regular graph with intersection array $\{44,30,5;1,3,40\}$

A. A. Makhnevab, V. V. Bitkinac

a N.N. Krasovsky Institute of Mathematics and Meckhanics, 16, S. Kovalevskoy str., Ekaterinburg, 620990, Russia
b Ural Federal University named after the first President of Russia B.N.Yeltsin, 19, Mira str., Ekaterinburg, 620002, Russia
c North Ossetian State University after Kosta Levanovich Khetagurov, 46, Vatutina stк., Vladikavkaz, 362025, Russia
References:
Abstract: Prime divisors of orders of automorphisms and the fixed point subgraphs of automorphisms of prime orders are studied for a hypothetical distance-regular graph with intersection array $\{44,30,5;1,3,40\}$. Let $G={\rm Aut}(\Gamma)$ is nonsolvable group. If $\Gamma$ is arc-transitive then $G$ is is an extension of some group $P$ by $PGL_2(11)$, $|P:O_3(P)|=2$, $|G_a:P_a|=11$ and $|P:P_a|=9$.
Keywords: distance-regular graph, automorphism.
Received April 11, 2019, published June 8, 2019
Bibliographic databases:
Document Type: Article
UDC: 519.17
MSC: 05C25
Language: Russian
Citation: A. A. Makhnev, V. V. Bitkina, “On automorphisms of a distance-regular graph with intersection array $\{44,30,5;1,3,40\}$”, Sib. Èlektron. Mat. Izv., 16 (2019), 777–785
Citation in format AMSBIB
\Bibitem{MakBit19}
\by A.~A.~Makhnev, V.~V.~Bitkina
\paper On automorphisms of a distance-regular graph with intersection array $\{44,30,5;1,3,40\}$
\jour Sib. \`Elektron. Mat. Izv.
\yr 2019
\vol 16
\pages 777--785
\mathnet{http://mi.mathnet.ru/semr1094}
\crossref{https://doi.org/10.33048/semi.2019.16.052}
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