2018/08/15 by Reading, Nathan, Stella, Salvatore
#13F60 #Combinatorics (math.CO) #FOS: Mathematics
paper · doi:10.48550/arxiv.1808.05090
The characterization of orbits of roots under the action of a Coxeter element is a fundamental tool in the study of finite root systems and their reflection groups. This paper develops the analogous tool in the affine setting, adding detail and uniformity to a result of Dlab and Ringel.