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Finite coverings by normal subgroups

Authors: M. A. Brodie, R. F. Chamberlain and L.-C. Kappe
Journal: Proc. Amer. Math. Soc. 104 (1988), 669-674
MSC: Primary 20F26; Secondary 20F24
MathSciNet review: 964841
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Abstract: B. H. Neumann's characterization of groups possessing a finite covering by proper subgroups and Baer's characterization of groups with finite coverings by abelian subgroups are refined to results about finite coverings by normal subgroups. Various corollaries about the structure of groups having such finite coverings are derived. Using the method employed for the main theorem, a simplified proof of an earlier result of the third author concerning finite coverings by word subgroups is given.

References [Enhancements On Off] (What's this?)

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