Ben Williams

collaborators

3 papers

math.GR2024

Linear and smooth oriented equivalence of orthogonal representations of finite groups

Luis Eduardo García-Hernández, Ben Williams

Let $n \leq 5$ be an integer, and let $Γ$ be a finite group. We prove that if $ρ, ρ^{'} : Γ \to O (n)$ are two representations that are conjugate by an orientation-preserving diffeomorphis…

math.AG2012

Serre-Godeaux varieties and the etale index

Benjamin Antieau, Ben Williams

We use the Serre-Godeaux varieties of finite groups, projective representation theory, the twisted Atiyah-Segal completion theorem, and our previous work on the topological period-…

math.KT2012

The Gm-equivariant Motivic Cohomology of Stiefel Varieties

Ben Williams

We derive a version of the Rothenberg-Steenrod, fiber-to-base, spectral sequence for cohomology theories represented in model categories of simplicial presheaves. We then apply thi…