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arXiv · 2210.11788

Groups having 12 cyclic subgroups

Khyati Sharma·A. Satyanarayana Reddy
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Abstract

A finite group is said to be $n$-cyclic if it contains $n$ cyclic subgroups. For a finite group $G$, the ratio of the number of cyclic subgroups to the number of subgroups is known as the cyclicity degree of the group $G$ and is denoted by $cdeg (G)$. In this paper, we classify all $12$-cyclic groups. We also prove that the set of cyclicity degrees for all the finite groups is dense in $[0,1]$, which gives a solution to the problem asked by Tărnăuceanu and Tóth in [20] "For every $a\in [0, 1]$, does there exist a sequence $(G_n)$ of finite groups such that $\lim_{n\to\infty} cdeg(G_n)=a$ "?

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Khyati Sharma, A. Satyanarayana Reddy. 2025-06-14. Groups having 12 cyclic subgroups. https://doi.org/10.1017/s0004972725100427

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