Excluded power graphs of groups
Combinatorics
2026-03-24 v2 Group Theory
Abstract
Let be a set of integers greater than one. The -excluded power graph of a group has vertex set and an edge from to each power of other than itself provided that the power is not divisible by any element of . When for groups and with coprime orders, excluding the prime factors of yields a power graph with a quotient consisting of multiple copies of a quotient of the power graph (no exclusions) of . Partial results for the semidirect product under the same conditions are given. We describe groups whose -excluded power graphs consist of disjoint directed cliques.
Cite
@article{arxiv.2502.09519,
title = {Excluded power graphs of groups},
author = {Brian Curtin},
journal= {arXiv preprint arXiv:2502.09519},
year = {2026}
}