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Formation theory and groups of automorphisms of -groups*

Published online by Cambridge University Press:  14 February 2012

M. J. Tomkinson
Affiliation:
Department of Mathematics, University of Glasgow

Synopsis

Further results from the theory of finite soluble groups are extended to the class of locally finite groups with a satisfactory Sylow structure. Let be a saturated U-formation and A a -group of automorphisms of the -group G. A is said to act -centrally on G if G has an A-composition series (Λσ/Vσ; σ ∈ ∑) such that A induces an f(p)-group of automorphisms in each p-factor Λσ/Vσ. We show that in this situation A is an -group, thus generalising the result of Schmid [8]. Associated results of Schmid and of Baer are also extended to the infinite case.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1977

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References

1Baer, R.. Durch Formationen bestimmte Zerlegungen von Normalteilern einer endlichen Gruppe. J. Algebra 20 (1972), 3856.CrossRefGoogle Scholar
2Gardiner, A. D., Hartley, B. and Tomkinson, M. J.. Saturated formations and Sylow structure in locally finite groups. J. Algebra 17 (1971), 177211.CrossRefGoogle Scholar
3Graddon, C. J.. Some generalizations to certain locally finite groups of theorems due to Chambers and Rose. Illinois J. Math. 17 (1973), 666679.CrossRefGoogle Scholar
4Huppert, B.. Endliche Gruppen I (Berlin: Springer, 1967).CrossRefGoogle Scholar
5Huppert, B.. Zur Theorie der Formationen. Arch. Math. (Basel) 19 (1969), 561574.CrossRefGoogle Scholar
6Robinson, D. J. S.. Finiteness Conditions and Generalized Soluble Groups, Pt 1. Ergebn. Math. 62 (1972).Google Scholar
7Schmid, P.. Formationen und Automorphismengruppen. J. London Math. Soc. 7 (1973), 8394.Google Scholar
8Schmid, P.. Lokale Formationen endlicher Gruppen. Math. Z. 137 (1974), 3148.Google Scholar
9Tomkinson, M. J.. A Frattini-like subgroup. Math. Proc. Cambridge Philos. Soc. 11 (1975), 247257.CrossRefGoogle Scholar