Abstract
Let \(\widehat{\mathcal {S}}_g^{\alpha , \beta }(\mathbb {B}^n)\) be a subclass of normalized biholomorphic map**s defined on the unit ball in \(\mathbb {C}^n,\) which is closely related to the starlike map**s. Firstly, we obtain the growth theorem for \(\widehat{\mathcal {S}}_g^{\alpha , \beta }(\mathbb {B}^n)\). Secondly, we apply the growth theorem and a new type of the boundary Schwarz lemma to establish the distortion theorems of the Fréchet-derivative type and the Jacobi-determinant type for this subclass, and the distortion theorems with g-starlike map** (resp. starlike map**) are partly established also. At last, we study the Kirwan and Pell type results for the compact set of map**s which have g-parametric representation associated with a modified Roper–Suffridge extension operator, which extend some earlier related results.
Similar content being viewed by others
References
Barnard, R., FitzGerald, C., Gong, S.: A distortion theorem for biholomorphic map**s in \(\mathbb{C}^2\). Trans. Am. Math. Soc. 344, 907–924 (1994)
Bracci, F.: Shearing process and an example of a bounded support function in \(S^0(\mathbb{B}^2)\). Comput. Methods Funct. Theory 15, 151–157 (2015)
Cartan, H.: Sur la possibilité détendre aux fonctions de plusieurs variables complexes la théorie des fonctions univalentes. In: Montel, P. (ed.) Lecons sur les Fonctions Univalentes ou Multivalentes. Gauthier-Villars, Paris (1933)
Chirilă, T.: An extension operator associated with certain g-loewner chains. Taiwan. J. Math. 17(5), 1819–1837 (2013)
Chirilă, T.: Extreme points, support points and \(g\)-loewner chains associated with Roper–Suffridge and Pfaltzgraff–Suffridge extension operators. Complex Anal. Oper. Theory 9, 1781–1799 (2015)
Chirilă, T., Hamada, H., Kohr, G.: Extreme points and support points for map**s with \(g\)-parametric representation in \(\mathbb{C}^n\). Mathematica (Cluj) 56(79), 21–40 (2014)
Chu, C.H., Hamada, H., Honda, T., Kohr, G.: Distortion theorems for convex map**s on homogeneous balls. J. Math. Anal. Appl. 369(2), 437–442 (2010)
Duren, P.L.: Univalent functions, Grundlehren der mathematischen Wtssenschaften, vol. 259. Springer, New York, Berlin, Heidelberg, Tokyo (1983)
Graham, I., Hamada, H., Kohr, G.: Parametric representation of univalent map**s in several complex variables. Can. J. Math. 54, 324–351 (2002)
Graham, I., Hamada, H., Kohr, G., Kohr, M.: Extreme points, support points and the Loewner variation in several complex variables. Sci. China Math. 55, 1353–1366 (2012)
Graham, I., Hamada, H., Kohr, G., Kohr, M.: Extremal properties associated with univalent subordination chains in \(\mathbb{C}^n\). Math. Ann. 359, 61–99 (2014)
Graham, I., Hamada, H., Kohr, G., Kohr, M.: Bounded support points for map**s with \(g\)-parametric representation in \(\mathbb{C}^2\). J. Math. Anal. Appl. 454, 1085–1105 (2017)
Graham, I., Hamada, H., Kohr, G., Suffridge, T.J.: Extension operators for locally univalent map**s. Mich. Math. J. 50, 37–55 (2002)
Graham, I., Kohr, G., Pfaltzgraff, J.A.: Parametric representation and linear functionals associated with extension operators for biholomorphic map**s. Rev. Roum. Math. Pures Appl. 52, 47–68 (2007)
Gurganus, K.R.: \(\Phi \)-like holomorphic functions in \(\mathbb{C}^n\) and banach spaces. Proc. Am. Math. Soc. 205, 389–406 (1975)
Hamada, H., Honda, T., Kohr, G.: Growth theorems and coefficient bounds for univalent holomorphic map**s which have parametric representation. J. Math. Anal. Appl. 317, 302–319 (2006)
Hamada, H., Kohr, G.: Growth and distortion results for convex map**s in infinite dimensional spaces. Complex Var. 47(4), 291–301 (2002)
Kikuchi, K.: Starlike and convex map**s in several complex variables. Pac. J. Math. 44, 569–580 (1973)
Krantz, S.: The Schwarz lemma at the boundary. Complex Var. Elliptic Equ. 56(5), 455–468 (2011)
Liu, T.S., Wang, J.F., Tang, X.M.: Schwarz lemma at the boundary of the unit ball in \(\mathbb{C}^n\) and its applications. J. Geom. Anal. 25, 1890–1914 (2015)
Liu, X.S., Liu, T.S.: On the sharp distortion theorems for a subclass of starlike map**s in several complex variables. Taiwan. J. Math. 19(2), 363–379 (2015)
Liu, X.S., Liu, T.S.: Sharp distortion theorems for a subclass of biholomorphic map**s which have a parametric representation in several complex variables. Chin. Ann. Math. 37B(4), 553–570 (2016)
Pell, R.: Support point functions and the Loewner variation. Pac. J. Math. 86, 561–564 (1980)
Pfaltzgraff, J.A.: Subordination chains and univalence of holomorphic map**s in \(\mathbb{C}^n\). Math. Ann. 210, 55–68 (1974)
Roper, K., Suffridge, T.J.: Convex map**s on the unit ball of \(\mathbb{C}^n\). J. Anal. Math. 65, 333–347 (1995)
Schleissinger, S.: On support points of the class \(S^0(B^n)\). Proc. Am. Math. Soc. 142(11), 3881–3887 (2014)
Suffridge, T.J.: Starlikeness, Convexity and Other Geometric Properties of Holomorphic Maps in Higher Dimensions. Lecture Notes in Math, vol. 599, pp. 146–159. Springer, New York (1976)
Tu, Z.H., Zhang, S.: The Schwarz lemma at the boundary of the symmetrized bidisc. J. Math. Anal. Appl. 459, 182–202 (2018)
Xu, Q.H., Liu, T.S.: On the growth and covering theorem for normalized biholomorphic map**s. Chin. Ann. Math. 30(A), 213–220 (2009)
Zhang, X.F.: The growth theorems for subclasses of biholomorphic map**s in several complex variables. Cogent Math. 4, 1–11 (2017)
Acknowledgements
The project is supported by the National Natural Science Foundation of China (No. 11671306).
Author information
Authors and Affiliations
Corresponding author
About this article
Cite this article
Tu, Z., ** and Extremal Problem with Parametric Representation in \(\mathbb {C}^n\). Complex Anal. Oper. Theory 13, 2747–2769 (2019). https://doi.org/10.1007/s11785-018-00881-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11785-018-00881-z