Abstract
We state and prove a general version of the Schwarz-Pick Lemma that involves more than two points in the hyperbolic plane and with appears to contain all known variations of the classical result. We give some applications to complex function theory and then discuss our result in the context of the Pick-Nevanlinna Theorem.
Similar content being viewed by others
References
L. V. Ahlfors,Conformal Invariants, McGraw-Hill, New York, 1973.
L. V. Ahlfors,Möbius Transformations in Several Dimensions, University of Minnesota, 1981.
A. F. Beardon,On the Geometry of Discrete Groups, Graduate Texts in Mathematics 91, Springer, Berlin, 1983.
A. F. Beardon,The Schwarz-Pick Lemma for derivatives, Proc. Amer. Math. Soc.125 (1997), 3255–3256.
A. F. Beardon and T. K. Carne,A strengthening of the Schwarz-Pick inequality, Amer. Math. Monthly99 (1992), 216–217.
C. Carathéodory,Conformal Representation, Cambridge Univ. Press, 1958.
C. Carathéodory,Theory of Functions of a Complex Variable, Vol II, Chelsea, New York, 1960.
C. Craig and A. J. Macintyre,Inequalities for functions regular and bounded in a circle, Pacific J. Math.20 (1967), 449–454.
J. Dieudonné,Recherches sur quelques problèmes relatifs aux polynomes et aux fonctions bornées d'une variable complexe, Ann. Sci. Ecole Norm. Sup.48 (1931), 247–358.
P. L. Duren,Univalent Functions, Springer-Verlag, Berlin, 1980.
J. B. Garnett,Bounded Analytic Functions, Academic Press, New York, 1981.
G. M. Goluzin,Geometric Theory of Functions of a Complex Variable, Amer. Math. Soc., Providence, RI, 1969.
G. Julia,Principles Géométriques d'Analyse, Première partie, Gauthier-Villars, Paris, 1930.
D. E. Marshall,An elementary proof of the Pick-Nevanlinna interpolation theorem, Michigan Math. J.21 (1974), 219–223.
P. R. Mercer,Sharpened versions of the Schwarz Lemma, J. Math. Anal. Appl.205 (1997). 508–511.
P. R. Mercer,On a strengthened Schwarz-Pick inequality, J. Math. Anal. Appl.234 (1999), 735–739.
A. Rhodes, Ph.D. Dissertation, Cambridge, 1996.
W. Rogosinski,Zum Schwarzschen Lemma, Jahresber. Deutsch. Math.-Verein.44 (1934), 258–261.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Beardon, A.F., Minda, D. A multi-point Schwarz-Pick Lemma. J. Anal. Math. 92, 81–104 (2004). https://doi.org/10.1007/BF02787757
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02787757