1Department of Mathematical Sciences, Kent State University, Kent, Ohio 44242, USA
2Department of Mathematical Sciences, University of Tabriz, P.O. Box 51666-17766, Tabriz, Iran
3School of Mathematics, Institute for Research in Fundamental Sciences (IPM), P.O. Box 19395-5746, Tehran, Iran
Citation Information: Journal of Group Theory. Volume 14, Issue 6, Pages 865–880, ISSN (Online) 1435-4446, ISSN (Print) 1433-5883, DOI: 10.1515/jgt.2011.083, February 2011
Abstract
We prove that if G is a solvable group with cd(G) = {1, m, p, q, mp, mq}, where p and q are distinct primes and m > 1 is an integer not divisible by p or q, then G = A × B, where cd(A) = {1, p, q} and cd(B) = {1, m}. This generalizes [Lewis, J. Algebra 206: 235–260, 1998, Theorem A].
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