E. Iwaki

activity

20062008

collaborators

3 papers

math.RA2008

Hyperbolicity of Semigroup Algebras II

E. Iwaki, E. Jespers, S. O. Juriaans +1

In 1996 Jespers and Wang classified finite semigroups whose integral semigroup ring has finitely many units. In a recent paper, Iwaki-Juriaans-Souza Filho continued this line of re…

math.RA2007

Hyperbolicity of Semigroup Algebras

E. Iwaki, S. O. Juriaans, A. C. Souza Filho

Let $A$ be a finite dimensional $Q -$ algebra and $Γ s u b se t A$ a $Z -$ order. We classify those $A$ with the property that $Z^{2}$ does not embed in $U (Γ)$ . We call this last pr…

math.RA2006

Hypercentral unit groups and the hyperbolicity of a modular group algebra

E. Iwaki, S. O. Juriaans

We classify groups G such that the unit group U(ZG) is hypercentral. In the second part we classify groups G whose modular group algebra has hyperbolic unit group V(KG).