Geodesic
On the intersection graph of a finite group
Czechoslovak Mathematical Journal, Tome 67 (2017) no. 4, pp. 1145-1153

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For a finite group $G$, the intersection graph of $G$ which is denoted by $\Gamma (G)$ is an undirected graph such that its vertices are all nontrivial proper subgroups of $G$ and two distinct vertices $H$ and $K$ are adjacent when $H\cap K\neq 1$. In this paper we classify all finite groups whose intersection graphs are regular. Also, we find some results on the intersection graphs of simple groups and finally we study the structure of ${\rm Aut}(\Gamma (G))$.
DOI : 10.21136/CMJ.2017.0446-16
Classification : 05C25, 20E32
Keywords: intersection graph; regular graph; simple group; automorphism group 
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Shahsavari, Hossein; Khosravi, Behrooz. On the intersection graph of a finite group. Czechoslovak Mathematical Journal, Tome 67 (2017) no. 4, pp. 1145-1153. doi: 10.21136/CMJ.2017.0446-16

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