Rotation Bounds for Hölder Continuous Homeomorphisms with Integrable Distortion

We obtain sharp rotation bounds for the subclass of homeomorphisms $f: \mathbb{C} \rightarrow \mathbb{C}$ of finite distortion which have distortion function in $L_{l o c}^p, p>1$, and for which a Hölder continuous inverse is available. The interest in this class is partially motivated by example...

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Bibliographic Details
Authors: Clop, Albert, Hitruhin, Lauri, Sengupta, Banhirup
Format: article
Status:Published version
Publication Date:2022
Country:España
Institution:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repository:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/217437
Online Access:https://hdl.handle.net/2445/217437
Access Level:Open access
Keyword:Teoria geomètrica de funcions
Funcions de variables complexes
Desigualtats (Matemàtica)
Geometric function theory
Functions of complex variables
Inequalities (Mathematics)
Description
Summary:We obtain sharp rotation bounds for the subclass of homeomorphisms $f: \mathbb{C} \rightarrow \mathbb{C}$ of finite distortion which have distortion function in $L_{l o c}^p, p>1$, and for which a Hölder continuous inverse is available. The interest in this class is partially motivated by examples arising from fluid mechanics. Our rotation bounds hereby presented improve the existing ones, for which the Hölder continuity is not assumed. We also present examples proving sharpness.