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Groups with an automorphism cubing many elements

Published online by Cambridge University Press:  09 April 2009

Desmond MacHale
Affiliation:
Department of Mathematics University CollegeCork Ireland.
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Let G be a group and αn the mapping which takes every element of G to its nth power, where n is an integer. It is well known that if αn is an automorphism then G is Abelian in the cases n = -1,2, and 3. For any other integer n(≠ 0) there exists a non-Abelian group which admits αn as the identity automorphism. Indeed Miller (1929) has shown that if n ≠ 0, ±1, 2, 3 then there exist non-Abelian groups which admit αn as a non-trivial automorphism.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 1975

References

Joseph, K. S. (1969), Commutativity in non-Abelian groups (Ph. D. thesis, University of California, Los Angeles, 1969).Google Scholar
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Miller, G. A. (1929), ‘Possible α-automorphisms of non-Abelian groups’, Proc. Nat. Acad. Sci. 15, 8991.CrossRefGoogle ScholarPubMed