On Koebe-type functions for harmonic quasiconformal mappings

Fuente: arXiv
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Main Authors: Wang, Zhi-Gang, Qiu, Jia-Le, Rasila, Antti
Format: Preprint
Published: 2025
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_version_ 1866914229059059712
author Wang, Zhi-Gang
Qiu, Jia-Le
Rasila, Antti
author_facet Wang, Zhi-Gang
Qiu, Jia-Le
Rasila, Antti
contents This paper studies a class of Koebe-type harmonic quasiconformal functions. It is motivated by the shear construction of Clunie and Sheil-Small [Ann. Acad. Sci. Fenn. Ser. A I Math. 9: 3--25, 1984] and the harmonic quasiconformal Koebe function. Equivalent univalence conditions, pre-Schwarzian and Schwarzian norms, coefficient inequalities, as well as growth and area theorems for this family of functions are established. These findings improve several previously known results.
format Preprint
id arxiv_https___arxiv_org_abs_2505_12562
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle On Koebe-type functions for harmonic quasiconformal mappings
Wang, Zhi-Gang
Qiu, Jia-Le
Rasila, Antti
Complex Variables
31A05, 30C55, 30C62
This paper studies a class of Koebe-type harmonic quasiconformal functions. It is motivated by the shear construction of Clunie and Sheil-Small [Ann. Acad. Sci. Fenn. Ser. A I Math. 9: 3--25, 1984] and the harmonic quasiconformal Koebe function. Equivalent univalence conditions, pre-Schwarzian and Schwarzian norms, coefficient inequalities, as well as growth and area theorems for this family of functions are established. These findings improve several previously known results.
title On Koebe-type functions for harmonic quasiconformal mappings
topic Complex Variables
31A05, 30C55, 30C62
url https://arxiv.org/abs/2505.12562