Abstract
In this paper we study various classes of locally convex analytic functions in the unit disc, which are invariant under the group of Möbius automorphisms of the unit disc. Bounds for the Schwarzian derivative of functions in these classes are achieved and used to obtain estimates for the uniform hyperbolic radius of univalence in these classes.
Similar content being viewed by others
References
L. V. Ahlfors,Conformal Invariants: Topics in Geometric Function Theory, McGraw-Hill, New York, 1973.
P. R. Beesack and B. Schwarz,On the zeros of solutions of second-order linear differential equations, Can. J. Math.8 (1956), 504–515.
A. W. Goodman,Univalent Functions, Mariner Publishing Company, Inc., 1983.
D. Minda,The Schwarzian derivative and univalence criteria, Contemp. Math.38 (1985), 43–52.
Z. Nehari,The Schwarzian derivative and schlicht functions, Bull. Am. Math. Soc.55 (1949), 545–551.
Z. Nehari,A property of convex conformal maps, J. Analyse Math.30 (1976), 390–393.
Ch. Pommerenke,Linear-invariante Familien analytischer Funktionen I, Math. Ann.155 (1964), 108–154.
S. Y. Trimble,A coefficient inequality for convex univalent functions, Proc. Am. Math. Soc.48 (1975), 266–267.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Harmelin, R. Locally convex functions and the Schwarzian derivative. Israel J. Math. 67, 367–379 (1989). https://doi.org/10.1007/BF02764954
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02764954