Open AccessEstimates for initial coefficients of certain bi-univalent functions
Author(s) -
Vibha Madaan,
Ajay Kumar,
V. Ravichandran
Publication year - 2021
Publication title -
filomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.449
H-Index - 34
eISSN - 2406-0933
pISSN - 0354-5180
DOI - 10.2298/fil2106993m
Subject(s) - mathematics , analytic function , unit disk , extension (predicate logic) , function (biology) , univalent function , unit (ring theory) , pure mathematics , mathematical analysis , mathematics education , evolutionary biology , computer science , biology , programming language
Estimates are obtained for the initial coefficients of a normalized analytic function f in the unit disk D such that f and the analytic extension of f-1 to D belong to certain subclasses of univalent functions. The bounds obtained improve some existing known bounds.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom