Bounded support points for mappings with g-parametric representation in C2

被引:23
作者
Graham, Ian [1 ]
Hamada, Hidetaka [2 ]
Kohr, Gabriela [3 ]
Kohr, Mirela [3 ]
机构
[1] Univ Toronto, Dept Math, Toronto, ON M5S 2E4, Canada
[2] Kyushu Sangyo Univ, Fac Sci & Engn, Higashi Ku, 3-1 Matsukadai 2-Chome, Fukuoka 8138503, Japan
[3] Babes Bolyai Univ, Fac Math & Comp Sci, 1 M Kogalniceanu Str, Cluj Napoca 400084, Romania
基金
加拿大自然科学与工程研究理事会;
关键词
Caratheodory family; Extreme point; Loewner chain; Loewner differential equation; Reachable family; Support point; SUBORDINATION CHAINS; STARLIKE MAPPINGS; HOLOMORPHIC MAPPINGS; COEFFICIENT BOUNDS; EXTREME-POINTS; COMPLEX; EQUATION; FAMILIES; GROWTH; CONVEX;
D O I
10.1016/j.jmaa.2017.05.023
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
In this paper we consider support points for the family S-g(0)(B-2) of mappings with g-parametric representation on the Euclidean unit ball B-2 in C-2, where g is a univalent function on the unit disc U in C, which satisfies certain natural assumptions. We shall use the shearing process recently introduced by Bracci, to prove the existence of bounded support points for the family S-g(0)(B-2). This result is in contrast to the one dimensional case, where all support points of the family S are unbounded. We also study the case of time-log M reachable families (R) over tilde (log) M(id(B2),M-g) generated by the Caratheodory family M-g, and obtain certain results and applications, which show a basic difference between the theory in the case of one complex variable and that in higher dimensions. Of particular interest is the case where g is a convex (univalent) function on U. Finally, various consequences and certain conjectures are also considered. (C) 2017 Elsevier Inc. All rights reserved.
引用
收藏
页码:1085 / 1105
页数:21
相关论文
共 38 条
[11]   Evolution families and the Loewner equation II: complex hyperbolic manifolds [J].
Bracci, Filippo ;
Contreras, Manuel D. ;
Diaz-Madrigal, Santiago .
MATHEMATISCHE ANNALEN, 2009, 344 (04) :947-962
[12]   APPLICATIONS OF SUBORDINATION CHAINS TO STARLIKE MAPPINGS IN C-N [J].
CHUAQUI, M .
PACIFIC JOURNAL OF MATHEMATICS, 1995, 168 (01) :33-48
[13]   Solutions for the generalized Loewner differential equation in several complex variables [J].
Duren, Peter ;
Graham, Ian ;
Hamada, Hidetaka ;
Kohr, Gabriela .
MATHEMATISCHE ANNALEN, 2010, 347 (02) :411-435
[14]  
Goodman G.S., 1968, THESIS
[15]   Growth, distortion and coefficient bounds for Caratheodory families in Cn and complex Banach spaces [J].
Graham, I. ;
Hamada, H. ;
Honda, T. ;
Kohr, G. ;
Shon, K. H. .
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS, 2014, 416 (01) :449-469
[16]   Parametric representation of univalent mappings in several complex variables [J].
Graham, I ;
Hamada, H ;
Kohr, G .
CANADIAN JOURNAL OF MATHEMATICS-JOURNAL CANADIEN DE MATHEMATIQUES, 2002, 54 (02) :324-351
[17]  
Graham I., 2003, Monographs and Textbooks in Pure and Applied Mathematics, V255
[18]  
Graham I, 2016, J GEOM ANAL, V26, P1560, DOI 10.1007/s12220-015-9600-z
[19]   Extremal properties associated with univalent subordination chains in Cn [J].
Graham, Ian ;
Hamada, Hidetaka ;
Kohr, Gabriela ;
Kohr, Mirela .
MATHEMATISCHE ANNALEN, 2014, 359 (1-2) :61-99
[20]   Extreme points, support points and the Loewner variation in several complex variables [J].
Graham, Ian ;
Hamada, Hidetaka ;
Kohr, Gabriela ;
Kohr, Mirela .
SCIENCE CHINA-MATHEMATICS, 2012, 55 (07) :1353-1366