HERMAN RINGS AND ARNOLD DISKS
HERMAN RINGS AND ARNOLD DISKS
For (λ,a)∈ C* × C, let fλ,a be the rational map defined by fλ,a(z) = λ z2 (az+1)/(z+a). If α∈ R/Z is a Brjuno number, we let Dα be the set of parameters (λ,a) such that fλ,a has a fixed Herman ring with rotation number α (we consider that (e2iπα,0)∈ …