
arXiv: 0706.4296
Quantitative estimates are obtained for the (finite) valence of functions analytic in the unit disk with Schwarzian derivative that is bounded or of slow growth. A harmonic mapping is shown to be uniformly locally univalent with respect to the hyperbolic metric if and only if it has finite Schwarzian norm, thus generalizing a result of B. Schwarz for analytic functions. A numerical bound is obtained for the Schwarzian norms of univalent harmonic mappings.
Schwarzian norm, Mathematics - Complex Variables, Geometric function theory, minimal surface, Matemática física y química, General theory of univalent and multivalent functions of one complex variable, 510, 30C99, 31A05, 30C55, Función de Schwarz, Mapas armónicos, harmonic lift, FOS: Mathematics, harmonic mapping, valence, Complex Variables (math.CV), Harmonic, subharmonic, superharmonic functions in two dimensions
Schwarzian norm, Mathematics - Complex Variables, Geometric function theory, minimal surface, Matemática física y química, General theory of univalent and multivalent functions of one complex variable, 510, 30C99, 31A05, 30C55, Función de Schwarz, Mapas armónicos, harmonic lift, FOS: Mathematics, harmonic mapping, valence, Complex Variables (math.CV), Harmonic, subharmonic, superharmonic functions in two dimensions
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