Bulletin of the London Mathematical Society Advance Access originally published online on September 23, 2009
Bulletin of the London Mathematical Society 2009 41(5):916-926; doi:10.1112/blms/bdp072
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© 2009 London Mathematical Society
The structure of finite groups of conjugate rank 2
Dipartimento di Matematica U. Dini
Università degli Studi di Firenze
viale Morgagni 67/a
50134 Firenze
Italy
Dipartimento di Matematica Applicata
Università CaFoscari
Dorsoduro 3825/e
30123 Venezia
Italy
jabara@unive.it
Received 26 November 2008. Revision received 27 May 2009.
We give a structure theorem for the finite groups with three conjugacy class sizes. In particular, they are solvable groups with derived length at most 3 or nilpotent groups.
2000 Mathematics Subject Classification 20E45, 20D60.
The authors were partially supported by the MIUR project Teoria dei gruppi e applicazioni.