Let f be a complex-valued harmonic mapping defined in the unit disc D. The theorems of Chuaqui and Osgood (J Lond Math Soc 2:289–298, 1993), which assert that the bounds of the size of the hyperbolic norm of the Schwarzian derivative for an analytic function f imply certain bounds for distortion ...
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http://repositoriodigital.uct.cl/handle/10925/1997
Hernández, Rodrigo
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Venegas, Osvaldo
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[Distortion Theorems Associated with Schwarzian Derivative for Harmonic Mappings]
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Distortion Theorems Associated with Schwarzian Derivative for Harmonic Mappings
