On the proof of a theorem of Pálfy.
The electronic journal of combinatorics, Tome 13 (2006)
Pálfy proved that a group $G$ is a CI-group if and only if $\vert G\vert = n$ where either $\gcd(n,\varphi(n)) = 1$ or $n = 4$, where $\varphi$ is Euler's phi function. We simplify the proof of "if $\gcd(n,\varphi(n)) = 1$ and $G$ is a group of order $n$, then $G$ is a CI-group".
@article{10_37236_1154,
author = {Edward Dobson},
title = {On the proof of a theorem of {P\'alfy.}},
journal = {The electronic journal of combinatorics},
year = {2006},
volume = {13},
doi = {10.37236/1154},
zbl = {1112.20004},
url = {http://geodesic.mathdoc.fr/articles/10.37236/1154/}
}
Edward Dobson. On the proof of a theorem of Pálfy.. The electronic journal of combinatorics, Tome 13 (2006). doi: 10.37236/1154
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