Total rings of quotients of higher dimensional Iwasawa algebras

Abstract

Let $\mathcal{G}=H⋊\Gamma$ be a semidirect product of a finite group $H$ with $\Gamma ={\mathbb{Z}}_p^d$, the direct product of finitely many copies of the additive group of the $p$-adic integers. In the case $d=1$, Iwasawa algebras of such profinite groups were studied by Ritter--Weiss, Lau, Nickel, and the author. We generalise these results to all $d\ge 1$, describing the Wedderburn decomposition of the total ring of quotients of the Iwasawa algebra of $\mathcal{G}$.

arXiv comment24 pages