About primitive regular graphs with exponent 2 | Applied Discrete Mathematics. Supplement. 2017. № 10. DOI: 10.17223/2226308X/10/51

About primitive regular graphs with exponent 2

Primitive regular graphs with exponent 2 are considered. We refine the known result that the number of edges of an undirected n-vertex graph with exponent 2 must be at least (3n - 3)/2 for odd n and (3n - 2)/2 for an even n. For regular n-vertex graph with exponent 2 and n > 4, the minimal number of edges is 2n.

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Keywords

примитивный граф, примитивная матрица, экспонент, однородный граф, primitive graph, primitive matrix, exponent, regular graph

Authors

NameOrganizationE-mail
Abrosimov M. B.Chernyshevsky Saratov State Universitymic@rambler.ru
Kostin S. V.Moscow State University of Information Technologies, Radio Engineering and Electronicskostinsv77@mail.ru
Всего: 2

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 About primitive regular graphs with exponent 2 | Applied Discrete Mathematics. Supplement. 2017. № 10. DOI: 10.17223/2226308X/10/51

About primitive regular graphs with exponent 2 | Applied Discrete Mathematics. Supplement. 2017. № 10. DOI: 10.17223/2226308X/10/51