Benjamin Steinberg

collaborators

2 papers

math.OA2025

Simplicity of $C^{*}$ -algebras of contracting self-similar groups

Eusebio Gardella, Volodymyr Nekrashevych, Benjamin Steinberg +1

We show that the $C^{*}$ -algebra associated by Nekrashevych to a contracting self-similar group is simple if and only if the corresponding complex $*$ -algebra is simple. We also i…

math.GR2024

The homology of completely simple semigroups

Benjamin Steinberg

I explicitly compute the Eilenberg-Mac Lane homology of a completely simple semigroup using topological means. I also complete Gray and Pride's investigation into the homological f…

Simplicity of C∗-algebras of contracting self-similar groups

The homology of completely simple semigroups

Simplicity of $C^{*}$ -algebras of contracting self-similar groups