A new look at twin reduction
Combinatorics
2025-07-15 v1
Abstract
Twin reduction defines an equivalence relation on the vertex set of a graph. I give a characterisation of this equivalence relation. A consequence is a structure theorem for the automorphism group of the graph.
Cite
@article{arxiv.2507.10189,
title = {A new look at twin reduction},
author = {Peter J. Cameron},
journal= {arXiv preprint arXiv:2507.10189},
year = {2025}
}