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arXiv · 1108.5406

When Any Group of N Elements is Cyclic?

V. Bragin·Ant. Klyachko·A. Skopenkov
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Abstract

We give a simple proof of the well-known fact: any group of n elements is cyclic if and only if n and \phi(n) are coprime. This note is accessible for students familiar with permutations and basic number theory. No knowledge of abstract group theory is required; a few necessary notions are introduced in the course of the proof. The note could also be an interesting easy reading for mature mathematicians.

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V. Bragin, Ant. Klyachko, A. Skopenkov. 2011-08-27. When Any Group of N Elements is Cyclic?. https://arxiv.org/abs/1108.5406

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