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Integrals of groups

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Integrals_revised.pdf (394.2Kb)
Date
10/2019
Author
Araújo, João
Cameron, Peter Jephson
Casolo, Carlo
Matucci, Francesco
Keywords
Groups
Derived group
Inverse problem
QA Mathematics
Mathematics(all)
T-NDAS
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Abstract
An integral of a group G is a group H whose derived group (commutator subgroup) is isomorphic to G. This paper discusses integrals of groups, and in particular questions about which groups have integrals and how big or small those integrals can be. Our main results are: - If a finite group has an integral, then it has a finite integral. - A precise characterization of the set of natural numbers n for which every group of order n is integrable: these are the cubefree numbers n which do not have prime divisors p and q with q | p-1. - An abelian group of order n has an integral of order at most n1+o(1), but may fail to have an integral of order bounded by cn for constant c. - A finite group can be integrated n times (in the class of finite groups) for every n if and only if it is a central product of an abelian group and a perfect group. There are many other results on such topics as centreless groups, groups with composition length 2, and infinite groups. We also include a number of open problems.
Citation
Araújo , J , Cameron , P J , Casolo , C & Matucci , F 2019 , ' Integrals of groups ' , Israel Journal of Mathematics , vol. 234 , no. 1 , pp. 149-178 . https://doi.org/10.1007/s11856-019-1926-y
Publication
Israel Journal of Mathematics
Status
Peer reviewed
DOI
https://doi.org/10.1007/s11856-019-1926-y
ISSN
0021-2172
Type
Journal article
Rights
Copyright © 2019 The Hebrew University of Jerusalem. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1007/s11856-019-1926-y
Description
Funding: Fundação para a Ciência e a Tecnologia (CEMAT-Ciências FCT project UID/Multi/04621/2013).
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/20588

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