On the theorem of Wan for K-quasiconformal hyperbolic harmonic self mappings of the unit disk. (English) Zbl 1474.30153
MSC:
| 30C62 | Quasiconformal mappings in the complex plane |
| 30C80 | Maximum principle, Schwarz’s lemma, Lindelöf principle, analogues and generalizations; subordination |
| 30F15 | Harmonic functions on Riemann surfaces |
| 31A05 | Harmonic, subharmonic, superharmonic functions in two dimensions |
