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Logarithmic Coefficient Bounds and Coefficient Conjectures for Classes Associated with Convex Functions

open access: yesJournal of Function Spaces, 2021
It is well-known that the logarithmic coefficients play an important role in the development of the theory of univalent functions. If S denotes the class of functions fz=z+∑n=2∞anzn analytic and univalent in the open unit disk U, then the logarithmic ...
Davood Alimohammadi   +3 more
doaj   +4 more sources

The Third Logarithmic Coefficient for Certain Close-to-Convex Functions

open access: yesJournal of Mathematics, 2022
The logarithmic coefficients γn of a normalized analytic functions f are defined by log  fz/z=2∑n=1∞γnzn. For certain close-to-convex functions fz=z+a2z2+⋯, Cho et al. (on the third logarithmic coefficient in some subclasses of close-to-convex functions)
Najla M. Alarifi
doaj   +3 more sources

Inverse and Logarithmic Coefficient Bounds of Concave Univalent Functions

open access: yesAxioms
The concept of coefficient estimates on univalent functions is one of the interesting aspects explored recently by many researchers. Motivated by this direction, in this present work, we obtain the upper bounds of initial inverse coefficients and ...
Kuppusami Sakthivel   +2 more
doaj   +3 more sources

The third logarithmic coefficient for the class S [PDF]

open access: yesTURKISH JOURNAL OF MATHEMATICS, 2020
In this paper we give an upper bound of the third logarithmic coefficient for the class $\mathcal{S}$ of univalent functions in the unit disc.
Milutin OBRADOVIĆ, Nikola TUNESKI
openaire   +5 more sources

Logarithmic coefficients and a coefficient conjecture for univalent functions [PDF]

open access: yesMonatshefte für Mathematik, 2017
11 pages, 4 figures; To appear in Monatshefte fuer Mathematik; In the earlier version, there were a couple of small mistakes (see the proof of Theorem 1) but the statement remains the ...
Obradović, Milutin   +2 more
openaire   +6 more sources

Sharp Bounds of Hankel Determinant on Logarithmic Coefficients for Functions Starlike with Exponential Function

open access: yesFractal and Fractional, 2022
Using the Lebedev–Milin inequalities, bounds on the logarithmic coefficients of an analytic function can be transferred to estimates on coefficients of the function itself and related functions.
Lei Shi   +4 more
doaj   +2 more sources

Hankel Determinant Containing Logarithmic Coefficients for Bounded Turning Functions Connected to a Three-Leaf-Shaped Domain

open access: yesMathematics, 2022
The purpose of this study was to obtain the sharp Hankel determinant H2,1Ff/2 and H2,2Ff/2 with a logarithmic coefficient as entry for the class BT3L of bounded turning functions connected with a three-leaf-shaped domain.
Lei Shi   +3 more
doaj   +1 more source

Sharp Bounds for the Second Hankel Determinant of Logarithmic Coefficients for Strongly Starlike and Strongly Convex Functions

open access: yesAxioms, 2022
The logarithmic coefficients are very essential in the problems of univalent functions theory. The importance of the logarithmic coefficients is due to the fact that the bounds on logarithmic coefficients of f can transfer to the Taylor coefficients of ...
Sevtap Sümer Eker   +3 more
doaj   +1 more source

Erratum to: Logarithmic coefficients and a coefficient conjecture for univalent functions [PDF]

open access: yesMonatshefte für Mathematik, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Obradović, Milutin   +2 more
openaire   +1 more source

Successive Logarithmic Coefficients of Univalent Functions

open access: yesComputational Methods and Function Theory, 2023
AbstractThe paper deals with logarithmic coefficients of univalent functions. The sharp lower and upper estimations of $$|\gamma _2(f)|-|\gamma _1(f)|$$ | γ 2
Lecko, Adam, Partyka, Dariusz
openaire   +2 more sources

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