A rotation theorem in the class of bounded univalent functions
Matematičeskie zametki, Tome 18 (1975) no. 5, pp. 633-640
Let $S_M$, $M>1$, be the class of functions $f(z)$ which are regular and univalent in the disk $|z|<1$ and satisfy the conditions $f(0)=0$, $f'(0)=1$, $|f(z)|. In the present note we will obtain an exact estimate for the argument of the derivative of a function of the class $S_M$.
@article{MZM_1975_18_5_a0,
author = {V. V. Goryainov},
title = {A~rotation theorem in the class of bounded univalent functions},
journal = {Matemati\v{c}eskie zametki},
pages = {633--640},
year = {1975},
volume = {18},
number = {5},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/MZM_1975_18_5_a0/}
}
V. V. Goryainov. A rotation theorem in the class of bounded univalent functions. Matematičeskie zametki, Tome 18 (1975) no. 5, pp. 633-640. http://geodesic.mathdoc.fr/item/MZM_1975_18_5_a0/