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Radius Problems for Starlike Functions Associated with the Tan Hyperbolic Function.
- Source :
- Journal of Function Spaces; 10/1/2021, p1-15, 15p
- Publication Year :
- 2021
-
Abstract
- The aim of this particular article is at studying a holomorphic function f defined on the open-unit disc D = z ∈ ℂ : z < 1 for which the below subordination relation holds z f ′ z / f z ≺ q 0 z = 1 + tan h z. The class of such functions is denoted by S tan h ∗. The radius constants of such functions are estimated to conform to the classes of starlike and convex functions of order β and Janowski starlike functions, as well as the classes of starlike functions associated with some familiar functions. [ABSTRACT FROM AUTHOR]
- Subjects :
- HYPERBOLIC functions
CONVEX functions
STAR-like functions
HOLOMORPHIC functions
Subjects
Details
- Language :
- English
- ISSN :
- 23148896
- Database :
- Complementary Index
- Journal :
- Journal of Function Spaces
- Publication Type :
- Academic Journal
- Accession number :
- 152766065
- Full Text :
- https://doi.org/10.1155/2021/9967640