Vincent Guirardel

collaborators

2 papers

math.GR2026

Algebraic groups over free and hyperbolic groups

Vincent Guirardel, ChloÃ© Perin

We define an algebraic group over a group $G$ to be a variety - that is, a subset of $G^{d}$ defined by equations over $G$ - endowed with a group law whose coordinates can be express…

math.GR2025

Measure equivalence rigidity of $Out (F_{N})$

Vincent Guirardel, Camille Horbez

We prove that for every $N \geq 3$ , the group $Out (F_{N})$ of outer automorphisms of a free group of rank $N$ is superrigid from the point of view of measure equivalence: any…

Algebraic groups over free and hyperbolic groups

Measure equivalence rigidity of Out(FN​)

Measure equivalence rigidity of $Out (F_{N})$