On automorphisms of a~strongly regular graph $(784,116,0,20)$
Sibirskie èlektronnye matematičeskie izvestiâ, Tome 5 (2008), pp. 80-87

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It is studied the group $G$ of automorphisms of a strongly regular graph with parameters $(784,116,0,20)$. We proved that if $G$ contain an element of prime order $p$, then $p\in\{2,7\}$. As a corollary, it is followed that the group of automorphisms of this srg is not quasy primitive.
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     title = {On automorphisms of a~strongly regular graph $(784,116,0,20)$},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
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     year = {2008},
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A. L. Gavrilyuk. On automorphisms of a~strongly regular graph $(784,116,0,20)$. Sibirskie èlektronnye matematičeskie izvestiâ, Tome 5 (2008), pp. 80-87. http://geodesic.mathdoc.fr/item/SEMR_2008_5_a9/