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Mathematica Slovaca

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Volume 58, Issue 4


On automorphisms of finite Abelian p-groups

Marek Golasiński / Daciberg Gonçalves
Published Online: 2008-06-14 | DOI: https://doi.org/10.2478/s12175-008-0084-1


Let A be a finitely generated abelian group. We describe the automorphism group Aut(A) using the rank of A and its torsion part p-part A p.

For a finite abelian p-group A of type (k 1, ..., k n), simple necessary and sufficient conditions for an n × n-matrix over integers to be associated with an automorphism of A are presented. Then, the automorphism group Aut(A) for a finite p-group A of type (k 1, k 2) is analyzed.

MSC: Primary 20K30; Secondary 20E36

Keywords: finite abelian p-group; automorphism group; semi-direct product

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About the article

Published Online: 2008-06-14

Published in Print: 2008-08-01

Citation Information: Mathematica Slovaca, Volume 58, Issue 4, Pages 405–412, ISSN (Online) 1337-2211, ISSN (Print) 0139-9918, DOI: https://doi.org/10.2478/s12175-008-0084-1.

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© 2008 Versita Warsaw. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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