Inequalities for the Schwarzian derivative for subclasses of convex functions in the unit disc
Автор: Polatoglu Yasar, Caglar Mert, Sen Arzu
Журнал: Владикавказский математический журнал @vmj-ru
Статья в выпуске: 2 т.8, 2006 года.
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Nehari norm of the Schwarzian derivative of an analytic function is closely related to its univalence. The famous Nehari--Kraus theorem [3, 4] and Ahlfors--Weill theorem [1] are of fundamental importance in this direction. For a non-constant meromorphic function f on D the unite disc, the Schwarzian derivative S_f of f by is holomorphic at z_0\in D if and only if f is locally univalent at z_0. The aim of this paper is to give sharp estimates of the Nehari norm for the subclasses of convex functions in the unit disc.
Короткий адрес: https://sciup.org/14318185
IDR: 14318185
Список литературы Inequalities for the Schwarzian derivative for subclasses of convex functions in the unit disc
- Duren P. L. Univalent Functions.-New York: Springer, 1983.
- Janowski W. Some Extremal Problems for Certain Families of Analytic Functions. I//Annales Polinici Math.-1973.-V. 28.-P. 297-326.
- Kraus W. Uber den Zusammanhang Charakteristiken Eines Einfach Zusammeshangenden Bereiches mit der Kreisabbildung//Mitt. Math. Sem. Giessen.-1932.-V. 21.-P. 1-28.
- Nehari Z. The Schwarzian Derivative and Schlicht Functions//Bull. Amer. Math. Soc.-1949.-V. 55.-P. 445-551.
- Robertson M. S. Univalent Functions for which zf'(z) is spirallike//Michigan Math. J.-1969.-V. 16.-P. 97-101.