Kelsey > Erdős number

The **Erdős number** describes the "collaborative distance" between mathematician Paul Erdős and another person, as measured by authorship of mathematical papers. An Erdős number of 3 indicates co-authorship of a paper with someone who co-authored a paper with a co-author of Paul Erdős

Peter Cameron → Colva Roney-Dougal → Tom Kelsey

2004

**Tractable Symmetry Breaking using Restricted Search Trees**

C M Roney-Dougal, I P Gent, **T W Kelsey**, S A Linton

Proceedings of the 16th European Conference on Artificial Intelligence

2018

**Generating sets of finite groups**

Cameron, Peter J., Lucchini, Andrea and **Roney-Dougal, Colva M.**

Trans. Amer. Math. Soc. 370 (2018), no. 9, 6751–6770.

1990

**On the number of sets of integers with various properties****Cameron, P. J.** and Erdős, P.

Number theory (Banff, AB, 1988), 61–79, de Gruyter, Berlin