Roots and Inverse Functions

Author(s):  
Ker-I Ko
Keyword(s):  
2001 ◽  
Vol 108 (10) ◽  
pp. 963 ◽  
Author(s):  
Yunhi Cho ◽  
Kyunghwan Park
Keyword(s):  

2008 ◽  
Vol 77 (264) ◽  
pp. 2295-2308 ◽  
Author(s):  
Michael S. Floater ◽  
Tom Lyche

1962 ◽  
Vol 14 ◽  
pp. 540-551 ◽  
Author(s):  
W. C. Royster

Let Σ represent the class of analytic functions(1)which are regular, except for a simple pole at infinity, and univalent in |z| > 1 and map |z| > 1 onto a domain whose complement is starlike with respect to the origin. Further let Σ- 1 be the class of inverse functions of Σ which at w = ∞ have the expansion(2).In this paper we develop variational formulas for functions of the classes Σ and Σ- 1 and obtain certain properties of functions that extremalize some rather general functionals pertaining to these classes. In particular, we obtain precise upper bounds for |b2| and |b3|. Precise upper bounds for |b1|, |b2| and |b3| are given by Springer (8) for the general univalent case, provided b0 =0.


1979 ◽  
Vol 79 (4) ◽  
pp. 313-316
Author(s):  
Joe Dan Austin
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document