Stefan Wagner

activity

20182026

collaborators

Showing math.RAShow all

2 papers · 1 filter

math.RA2025

Nonunital prime rings graded by ordered groups

Daniel Lännström, Patrik Lundström, Johan Öinert +1

Let $G$ be a group with identity element $e$ , and suppose that $S$ is an associative $G$ -graded ring that is not necessarily unital. In the case where $G$ is an ordered group, we s…

math.RA2018

Complex group rings and group C*-algebras of group extensions

Johan Öinert, Stefan Wagner

Let $N$ and $H$ be groups, and let $G$ be an extension of $H$ by $N$ . In this article we describe the structure of the complex group ring of $G$ in terms of data associated with $N…