2-recognizability of the simple groups $B_n(3)$ and $C_n(3)$ by prime graph

Document Type: Research Paper


1 Tarbiat Modares University

2 University of Shahre-kord


Let $G$ be a finite group and let $GK(G)$ be the prime graph of $G$. We assume that

$ngeqslant 5 $ is an odd number. In this paper, we show that the simple groups

$B_n(3)$ and $C_n(3)$ are 2-recognizable by their prime graphs. As consequences of the

result, the characterizability of the groups $B_n(3)$ and $C_n(3)$ by their spectra and

by the set of orders of maximal abelian subgroups are obtained. Also, we can conclude

that the AAM's conjecture is true for the groups under study.


Main Subjects

Volume 39, Issue 6
November and December 2013
Pages 1273-1281
  • Receive Date: 25 May 2011
  • Revise Date: 21 September 2011
  • Accept Date: 22 September 2011