Semisymmetric cubic graphs of order 34p³
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A simple graph is called semisymmetric if it is regular and edge transitive but not vertex transitive. Let $p$ be a prime. Folkman proved [J.~Folkman, {\it Regular line-symmetric graphs}, Journal of Combinatorial Theory {\bf 3} (1967), no. 3, 215--232] that no semisymmetric graph of order $2p$ or $2p^2$ exists. In this paper an extension of his result in the case of cubic graphs of order $34p^3$, $p\neq 17$, is obtained.
Abstract
A simple graph is called semisymmetric if it is regular and edge transitive but not vertex transitive. Let $p$ be a prime. Folkman proved [J.~Folkman, {\it Regular line-symmetric graphs}, Journal of Combinatorial Theory {\bf 3} (1967), no. 3, 215--232] that no semisymmetric graph of order $2p$ or $2p^2$ exists. In this paper an extension of his result in the case of cubic graphs of order $34p^3$, $p\neq 17$, is obtained.
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