# Automorphisms of Finite Abelian Groups

@article{Hillar2007AutomorphismsOF, title={Automorphisms of Finite Abelian Groups}, author={Christopher J. Hillar and D. Rhea}, journal={The American Mathematical Monthly}, year={2007}, volume={114}, pages={917 - 923} }

Much less known, however, is that there is a description of Aut(G), the automorphism group of G. The first compete characterization that we are aware of is contained in a paper by Ranum [1] near the turn of the last century. Beyond this, however, there are few other expositions [4]. Our goal is to fill this gap, thereby providing a much needed accessible and modern treatment. Our characterization of Aut(G) is accomplished in three main steps. The first observation is that it is enough to work… CONTINUE READING

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