Cocycle superrigidity from higher rank lattices to $\mathrm{Out}(F_N)$

Vincent Guirardel, Camille Horbez, Jean Lécureux

We prove a rigidity result for cocycles from higher rank lattices to $\mathrm{Out}(F_N)$ and more generally to the outer automorphism group of a torsion-free hyperbolic group. More…