01:04:53
published on September 8, 2026
Persistence theory from a representation-theoretic perspective 2
By Thomas Brüstle
Appears in collection : 2022 - T2 - WS1 - Mapping class groups and Out(Fn)
We prove that any subgroup of Out($F_N$) is either virtually abelian or has a finite index subgroup with an acylindrically hyperbolic quotient. In particular, every subgroup of Out($F_N$) is either virtually abelian or SQ-universal. This is a joint work with Camille Horbez.