Primitive Central Idempotents of Rational Group Algebras

2013/06/22 by Geoffrey Janssens · 1 citation
Mathematics · #math.RA #math.RT

paper · pdf · doi:10.1142/s0219498812501307

published as Journal of Algebra and its Applications, Volume 12, Issue 1, February 2013, 5pp

arxiv created 2013/06/22 · arxiv updated 2013/06/25

Abstract

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.

Cited by

• Primitive central idempotents of a finite group over a field

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