Results 41 to 50 of about 5,145,916 (216)

Radius of Starlikeness of Convex Combinations of Univalent Starlike Functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1980
The radius of starlikeness of the convex combination \[ t f ( z )
Hamilton, D. H., Tuan, P. D.
openaire   +1 more source

Janowski subclasses of starlike mappings [PDF]

open access: yes, 2022
In this paper, two subclasses of biholomorphic starlike mappings named Janowski starlike and Janowski almost starlike with complex parameters are in- troduced and studied. We determine M such that holomorphic mappings f which satisfy the condition lDf (z)
CURT, Paula
core   +1 more source

Coefficients Of The Inverse Of Strongly Starlike Functions. [PDF]

open access: yes, 2003
For the class of strongly starlike functions, sharp bounds on the first four coefficients of the inverse functions are determined. A sharp estimate for the Fekete-Szego coefficient functional is also obtained.
M. Ali, Roslhan
core   +1 more source

On multivalent starlike functions [PDF]

open access: yes, 2019
We prove some new sufficient conditions for function to be p-valent, or p-valently starlike in the unit disc.
SOKÓŁ, Janusz, NUNOKAWA, Mamoru
core   +1 more source

The Coefficients Of Functions With Positive Real Part And Some Special Classes Of Univalent Functions. [PDF]

open access: yes, 2003
Several special classes of univalent functions f in the unit disk U are characterized by the quantity zf'(z)/ f (z) lies in a given region in the right-half plane.
M. Ali, Rosihan
core   +1 more source

Conditions for one direction convexity and starlikeness

open access: yesJournal of Inequalities and Applications, 2016
We investigate several sufficient conditions on a function to be convex in one direction or starlike in one direction.
Mamoru Nunokawa   +4 more
doaj   +1 more source

Integral Operators on the Besov Spaces and Subclasses of Univalent Functions [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2020
‎In this note, we study the integral operators $I_{g}^{\gamma, \alpha}$ and $J_{g}^{\gamma, \alpha}$ of an analytic function $g$ on convex and starlike functions of a complex order. Then, we investigate the same operators on $H^{\infty}$ and Besov spaces.
Zahra Orouji, Ali Ebadian
doaj   +1 more source

On the Gakhov Equation for the Biernacki Operator [PDF]

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2015
The paper establishes the region in the parameter plane such that the image of any starlike function with the zero root of the Gakhov equation under the mapping by the Biernacki operator corresponding to the parameter of this region is found in the ...
A.V. Kazantsev
doaj  

Upper bounds of the logarithmic coefficients for some subclasses of analytic functions

open access: yesJournal of Inequalities and Applications, 2023
Due to the major importance of the study of the logarithmic coefficients for univalent functions, in this paper we find the sharp upper bounds for some expressions associated with logarithmic coefficients of functions that belong to some well-known ...
Ebrahim Analouei Adegani   +3 more
doaj   +1 more source

A New Roper-Suffridge Extension Operator on a Reinhardt Domain

open access: yesAbstract and Applied Analysis, 2011
We introduce a new Roper-Suffridge extension operator on the following Reinhardt domain given by where f is a normalized locally biholomorphic function on the unit disc D, pj are positive integer, aj are complex ...
Jianfei Wang, Cailing Gao
doaj   +1 more source

Home - About - Disclaimer - Privacy