English

Common divisor graphs for skew braces

Combinatorics 2025-02-04 v3 Group Theory

Abstract

We introduce two common divisor graphs associated with a finite skew brace, based on its λ\lambda- and θ\theta-orbits. We prove that the number of connected components is at most two and the diameter of a connected component is at most four. Furthermore, we investigate their relationship with isoclinism. Similarly to its group theoretic inspiration, the skew braces with a graph with two disconnected vertices are very restricted and are determined. Finally, we classify all finite skew braces with a graph with one vertex, where four infinite families arise.

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Cite

@article{arxiv.2306.12415,
  title  = {Common divisor graphs for skew braces},
  author = {Silvia Properzi and Arne Van Antwerpen},
  journal= {arXiv preprint arXiv:2306.12415},
  year   = {2025}
}

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Postprint version

R2 v1 2026-06-28T11:10:59.303Z