3 papers
math.CO2024
Problems from BCC30
Peter J. Cameron
These problems were mostly presented at the problem session at the 30th British Combinatorial Conference at Queen Mary University of London on 4 July 2024. Some were contributed la…
math.GR2022
String -groups with real Schur index
Peter J. Cameron, Allen Herman, Dimitri Leemans
We give examples of finite string -groups (the automorphism groups of abstract regular polytopes) that have irreducible characters of real Schur index . This answers a proble…
math.CO2013
The random graph
Peter J. Cameron
Erdős and Rényi showed the paradoxical result that there is a unique (and highly symmetric) countably infinite random graph. This graph, and its automorphism group, form the subjec…