3 papers
math.GT2026
Exotic aspherical 4-manifolds
Michael Davis, Kyle Hayden, Jingyin Huang +2
We construct closed, aspherical, smooth 4-manifolds that are homeomorphic but not diffeomorphic. These provide counterexamples to a smooth analog of the Borel conjecture in dimensi…
math.OA2025
Rigidity for von Neumann algebras of graph product groups II. Superrigidity results
Ionut Chifan, Michael Davis, Daniel Drimbe
In \cite{CDD22} we investigated the structure of -isomorphisms between von Neumann algebras associated with graph product groups of flower-shaped graphs and prop…
math.OA2025
Rigidity for von Neumann algebras of graph product groups. I. Structure of automorphisms
Ionut Chifan, Michael Davis, Daniel Drimbe
In this paper we study various rigidity aspects of the von Neumann algebra where is a graph product group \cite{Gr90} whose underlying graph is a certain cycle of cliq…