Let G H be the semidirect product of a finite group H and Zₚ. Let F/ Qₚ be a finite extension with ring of integers OF. Then the total ring of quotients QF (G) of the completed group ring O₅[ G] is a semisimple ring. We determine its Wedderburn decomposition by relating it to the Wedderburn decomposition of the group ring FH.
Ben Forrás (Thu,) studied this question.