Lifting problems for projective representations of finite groups over number fields

Opolka, Hans

doi:10.24355/dbbs.084-202009251215-0

Published

Lifting problems for projective representations of finite groups over number fields

The purpose of this note is to investigate lifting problems for cocycle classes of projective representations of finite groups over a field k of characteristic 0 and to provide more detailed information in this respect if k is a number field. Some examples are discussed.