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arXiv · 2103.04572

On the widths of finite groups (I)

Wujie Shi
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Abstract

Let $G$ be a finite group, $\pi(G)$ be the set of prime divisors dividing the order of $G$ and $\pi_e(G)$ (spectrum) denote the set of element orders of $G$. We define $w_o(G)$ = $|\pi(G)|$ the width of order of $G$ and $w_s(G)$ = max$\{|{\pi}(k)| | k \in \pi_e(G)\}$ the width of spectrum of $G$. In this paper, we discuss the cases of $w_o(G)$ and $w_s(G)$ are small, prove several new results and give a survey about the two widths of groups.

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Wujie Shi. 2021-03-08. On the widths of finite groups (I). https://arxiv.org/abs/2103.04572

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