English

Group action-stabilizer graph of group actions of a group on a set

Group Theory 2026-07-13 v1 Combinatorics

Abstract

In this paper we introduce the group action-stabilizer graph GAS(G)GAS(G) of a group GG on a set XX with vertex set as the collection of all the group actions of GG on XX, and any two vertices ϕ\phi and ψ\psi are adjacent if and only if the non-trivial subgroups Gxϕ\cap G_x^\phi and Gxψ\cap G_x^\psi of GG intersect non-trivially, where GxϕG_x^\phi and GxψG_x^\psi are two stabilizers of xx with respect to the actions ϕ\phi and ψ\psi, respectively. We characterize a special subgraph gas(G)gas(G) of GAS(G)GAS(G) in which the vertex set contains the actions ϕ\phi of GG on XX such that Gxϕ\cap G_x^\phi's are distinct. We determine the number of group actions within some specific groups and find certain conditions under which GAS(G)GAS(G) is equal to gas(G)gas(G). We also examine the conditions under which gas(G)gas(G) and its complement are derived graph for a finite nilpotent group GG.

Keywords

Cite

@article{arxiv.2607.11161,
  title  = {Group action-stabilizer graph of group actions of a group on a set},
  author = {Nepur Ranjan Hazarika and Kukil Kalpa Rajkhowa},
  journal= {arXiv preprint arXiv:2607.11161},
  year   = {2026}
}