• openAccess   The influence of p-regular class sizes on normal subgroups 

      Akhlaghi, zeinab; Beltrán, Antonio; Felipe, Maria José Walter de Gruyter (2013)
      Let G be a finite group and N be a normal subgroup of G and suppose that the p-regular elements of N have exactly two G-conjugacy class sizes. It is shown that N is solvable and that if H is a p-complement of N, then either ...