Supercharacter theories of dihedral groups
arXiv:1612.06913
Abstract
The set of supercharacter theories of a fixed group forms a natural lattice. An open question in the study of supercharacter theories is to classify this lattice, and to date, this has only been done for the cyclic groups . In this paper, we classify the supercharacter theory lattice of the dihedral groups in terms of their cyclic subgroups of rotations.