Talk:Siegel disks/Linearization

Hi. I have found: "Unfortunately, the multiplier e2πiθ is not the only factor for the precise condition of linearizability" in paper The Riemann hypothesis and holomorphic index in complex dynamics by Tomoki Kawahira. What are the other factors ? TIA --Adam Majewski (talk) 11:54, 11 May 2019 (UTC)