English

On a bijection between a finite group to a non-cyclic group with divisibility of element orders

Group Theory 2024-10-25 v5

Abstract

Consider a finite group GG of order nn with a prime divisor pp. In this article, we establish, among other results, that if the Sylow pp-subgroup of GG is neither cyclic nor generalized quaternion, then there exists a bijection ff from GG onto the abelian group Cnp×CpC_{\frac{n}{p}}\times C_p such that for every element xx in GG, the order of xx divides the order of f(x)f(x). This resolves Question 1.5 posed in [15]. As application of our results, we show that the group with the third largest value of the sum of element orders in the set of all finite groups of order nn is a solvable pp-nilpotent group where pp is the smallest prime divisor of nn such that the Sylow pp-subgroups are not cyclic.

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Cite

@article{arxiv.2402.13247,
  title  = {On a bijection between a finite group to a non-cyclic group with divisibility of element orders},
  author = {Mohsen Amiri},
  journal= {arXiv preprint arXiv:2402.13247},
  year   = {2024}
}

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28 pages