We give a description of the primitive central idempotents of the rational group algebra QG of a finite group G. Such a description is already investigated by Jespers, Olteanu and del Río, but some unknown scalars are involved. Our description also gives answers to their questions.
|Number of pages||5|
|Journal||Journal of Algebra and Its Applications|
|Publication status||Published - Feb 2013|
- group algebras
- representation theory