Canonical labelling of random regular graphs
Combinatorics
2026-02-20 v1 Discrete Mathematics
Probability
Abstract
We prove that whenever and as , then with high probability for any non-trivial initial colouring, the colour refinement algorithm distinguishes all vertices of the random regular graph . This, in particular, implies that with high probability admits a canonical labelling computable in time , where is the matrix multiplication exponent.
Cite
@article{arxiv.2602.17567,
title = {Canonical labelling of random regular graphs},
author = {Mikhail Isaev and Tamás Makai and Brendan McKay and Pawel Pralat and Jane Tan and Maksim Zhukovskii},
journal= {arXiv preprint arXiv:2602.17567},
year = {2026}
}