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# Exterior Univalent Harmonic Mappings With Finite Blaschke Dilatations

Published:1999-06-01
Printed: Jun 1999
• D. Bshouty
• W. Hengartner
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## Abstract

In this article we characterize the univalent harmonic mappings from the exterior of the unit disk, $\Delta$, onto a simply connected domain $\Omega$ containing infinity and which are solutions of the system of elliptic partial differential equations $\fzbb = a(z)f_z(z)$ where the second dilatation function $a(z)$ is a finite Blaschke product. At the end of this article, we apply our results to nonparametric minimal surfaces having the property that the image of its Gauss map is the upper half-sphere covered once or twice.
 Keywords: harmonic mappings, minimal surfaces
 MSC Classifications: 30C55 - General theory of univalent and multivalent functions 30C62 - Quasiconformal mappings in the plane 49Q05 - Minimal surfaces [See also 53A10, 58E12]

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