In this paper we consider a class of univalent orientation-preserving harmonic functions defined on the exterior of the unit disk which satisfy the condition. We are interested in finding radius of univalence and convexity for such class and we find extremal functions. Convolution, convex combination, and explicit quasiconformal extension for this class are also determined.
@article{bwmeta1.element.ojs-doi-10_17951_a_2010_54_1_63-73,
author = {Magdalena Gregorczyk and Jaros\l aw Widomski},
title = {Harmonic mappings in the exterior of the unit disk},
journal = {Annales Universitatis Mariae Curie-Sk\l odowska, sectio A -- Mathematica},
volume = {54},
year = {2010},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.ojs-doi-10_17951_a_2010_54_1_63-73}
}
Magdalena Gregorczyk; Jarosław Widomski. Harmonic mappings in the exterior of the unit disk. Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica, Tome 54 (2010) . http://gdmltest.u-ga.fr/item/bwmeta1.element.ojs-doi-10_17951_a_2010_54_1_63-73/
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