Tommy Hofmann

collaborators

2 papers

math.NT2026

Determination of the stably free cancellation property for orders

Werner Bley, Tommy Hofmann, Henri Johnston

Let $K$ be a number field, let $A$ be a finite-dimensional semisimple $K$ -algebra, and let $I^$ be an $O_{K}$ -order in $A$ . We give practical algorithms that determine wh…

math.NT2026

Determining unit groups and $K_{1}$ of finite rings

Tommy Hofmann

We consider the computational problem of determining the unit group of a finite ring, by which we mean the computation of a finite presentation together with an algorithm to expres…

Determination of the stably free cancellation property for orders

Determining unit groups and K1​ of finite rings

Determining unit groups and $K_{1}$ of finite rings