2023/08/16 by V. Bravo, Rodrigo Hernández, Bravo, V. +3
Mathematics · #Analytic and geometric function theory
paper · pdf · doi:10.48550/arxiv.2308.08385
This study focuses on Concave mappings, a class of univalent functions that exhibit a unique property: they map the unit disk onto a domain whose complement is convex. The main objective of this work is to characterize these mappings in terms of the real part of the expression 1 +zf''(z)/f'(z), considering scenarios where the omitted convex domain is either bounded or unbounded. In the case of a bounded convex domain, we investigate the pivotal role played by the Schwarzian derivative and the order of the functions in understanding the behavior and properties of these mappings.