Bilal SEKER

RESEARCH INTERESTS

Geometric Function Theory, Univalent Functions

Scopus Publications

The Second Hankel Determinant of Logarithmic Coefficients for Strongly Ozaki Close-to-Convex Functions
Sevtap Sümer Eker, Adam Lecko, Bilal Çekiç, and Bilal Şeker
Springer Science and Business Media LLC



Spiral-like functions associated with Miller–Ross-type Poisson distribution series
Sevtap Sümer Eker, Gangadharan Murugusundaramoorthy, Bilal Şeker, and Bilal Çekiç
Springer Science and Business Media LLC



ON NORMALIZED RABOTNOV FUNCTION ASSOCIATED WITH CERTAIN SUBCLASSES OF ANALYTIC FUNCTIONS
S. Smer Eker, B. �eker, and S. Ece
Petrozavodsk State University



A CLASS OF POISSON DISTRIBUTIONS BASED UPON A TWO-PARAMETER MITTAG-LEFFLER TYPE FUNCTION




On Subclasses of Analytic Functions Associated with Miller-Ross-Type Poisson Distribution Series




Sharp Bounds for the Second Hankel Determinant of Logarithmic Coefficients for Strongly Starlike and Strongly Convex Functions
Sevtap Sümer Eker, Bilal Şeker, Bilal Çekiç, and Mugur Acu
MDPI AG
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 univalent functions themselves or to their powers, via the Lebedev–Milin inequalities; therefore, it is interesting to investigate the Hankel determinant whose entries are logarithmic coefficients. The main purpose of this paper is to obtain the sharp bounds for the second Hankel determinant of logarithmic coefficients of strongly starlike functions and strongly convex functions.


Normalized dini functions connected with k-uniformly convex and k-starlike functions




On Subclasses of M-Fold Symmetric Bi-Univalent Functions




On certain subclasses of starlike and convex functions associated with Pascal distribution series
Bilal ŞEKER and Sevtap SÜMER EKER
The Scientific and Technological Research Council of Turkey (TUBITAK-ULAKBIM) - DIGITAL COMMONS JOURNALS



On subclasses of bi-convex functions defined by Tremblay fractional derivative operator
Sevtap Sumer Eker, , Bilal Seker, , and
Babes-Bolyai University



On a new subclass of bi-univalent functions defined by using Salagean operator
Bilal ŞEKER
The Scientific and Technological Research Council of Turkey (TUBITAK-ULAKBIM) - DIGITAL COMMONS JOURNALS
In this manuscript, by using the Salagean operator, new subclasses of bi-univalent functions in the open unit disk are defined. Moreover, for functions belonging to these new subclasses, upper bounds for the second and third coefficients are found.


A subclass of close-to-convex functions




On certain new subclass of close-to-convex functions
Bilal Şeker
Elsevier BV



Sâlâgean-type harmonic univalent functions




Subclasses of κ-uniformly convex and κ-starlike functions defined by sǎlǎgean operator
Bilal Seker, Mugur Acu, and Sevtap Sumer Eker
The Korean Mathematical Society



A certain convolution approach for subclasses of analytic functions with negative coefficients
H. M. Srivastava, Sevtap Sümer Eker, and Bilal Şeker
Informa UK Limited



Inclusion and neighborhood properties for certain classes of multivalently analytic functions of complex order associated with the convolution structure
H.M. Srivastava, Sevtap Sümer Eker, and Bilal Şeker
Elsevier BV



On subordination result associated with certain subclass of analytic functions involving salagean operator
Sevtap Sümer Eker, Bilal Şeker, and Shigeyoshi Owa
Springer Science and Business Media LLC
We obtain an interesting subordination relation for Salagean-type certain analytic functions by using subordination theorem.

RECENT SCHOLAR PUBLICATIONS

The Second Hankel Determinant of Logarithmic Coefficients for Strongly Ozaki Close-to-Convex Functions
S Smer Eker, A Lecko, B eki, B Şeker
Bulletin of the Malaysian Mathematical Sciences Society 46 (6), 183 2023



Spiral-like functions associated with Miller–Ross-type Poisson distribution series
S Smer Eker, G Murugusundaramoorthy, B Şeker, B eki
Boletn de la Sociedad Matemtica Mexicana 29 (1), 16 2023



On normalized Rabotnov function associated with certain subclasses of analytic functions
S Sumer Eker, B Şeker, S Ece
Проблемы анализа—Issues of Analysis 12 (2), 97-106 2023



On subclasses of analytic functions associated with Miller-Ross-type Poisson distribution series
B Şeker, S Smer Eker, B Cekic
Sahand Communications in Mathematical Analysis 19 (4), 69-79 2022



Sharp bounds for the second Hankel determinant of logarithmic coefficients for strongly starlike and strongly convex functions
S Smer Eker, B Şeker, B eki, M Acu
Axioms 11 (8), 369 2022



Certain subclasses of analytic functions associated with Miller-Ross-type Poisson distribution series
B Şeker, B eki
호남수학학술지 44 (4), 504-512 2022



On certain subclass of univalent functions of complex order associated with Pascal distribution series
B ŞEKER, SS EKER
Communications Faculty of Sciences University of Ankara Series A1 2021



On subclasses of m-fold symmetric bi-univalent functions
B Şeker, İ Taymur
Işık University Press 2021



Coefficient bounds for subclasses of bi-univalent functions defined by fractional derivative operator
SS Eker, B Şeker, S Ece
Tbilisi Mathematical Journal 13 (3), 1-10 2020



On certain subclasses of starlike and convex functions associated with Pascal distribution series
B ŞEKER, SS EKER
Turkish Journal of Mathematics 44 (6), 1982-1989 2020



On subclasses of bi-convex functions defined by Tremblay fractional derivative operator.
SS Eker, B Şeker
Studia Universitatis Babes-Bolyai, Mathematica 64 (4) 2019



On a new subclass of bi-univalent functions defined by using Salagean operator
B ŞEKER
Turkish Journal of Mathematics 42 (6), 2891-2896 2018



On -pseudo bi-starlike and -pseudo bi-convex functions with respect to symmetrical points
SS Eker, B Şeker
2018



Harmonik yalınkat ve harmonik ok katlı fonksiyonların bazı altsınıfları
B Şeker
2015



On certain new subclass of close-to-convex functions
B Şeker
Applied Mathematics and Computation 218 (3), 1041-1045 2011



Sˆalˆagean-type harmonic univalent functions
B Şeker
2011



A certain convolution approach for subclasses of analytic functions with negative coefficients
HM Srivastava, SS Eker, B Şeker
Integral Transforms and Special Functions 20 (9), 687-699 2009



Inclusion and neighborhood properties for certain classes of multivalently analytic functions of complex order associated with the convolution structure
HM Srivastava, SS Eker, B Şeker
Applied mathematics and computation 212 (1), 66-71 2009



Sălăgean-type harmonic multivalent functions.
JM Jahangiri, B Şeker, SS Eker
Acta Universitatis Apulensis. Mathematics-Informatics 18, 233-244 2009



On subordination result associated with certain subclass of analytic functions involving Salagean operator
SS Eker, B Şeker, S Owa
Journal of Inequalities and Applications 2007, 1-6 2007

MOST CITED SCHOLAR PUBLICATIONS

On certain new subclass of close-to-convex functions
B Şeker
Applied Mathematics and Computation 218 (3), 1041-1045 2011
Citations: 33



On a new subclass of bi-univalent functions defined by using Salagean operator
B ŞEKER
Turkish Journal of Mathematics 42 (6), 2891-2896 2018
Citations: 22



Inclusion and neighborhood properties for certain classes of multivalently analytic functions of complex order associated with the convolution structure
HM Srivastava, SS Eker, B Şeker
Applied mathematics and computation 212 (1), 66-71 2009
Citations: 15



On -pseudo bi-starlike and -pseudo bi-convex functions with respect to symmetrical points
SS Eker, B Şeker
2018
Citations: 12



A certain convolution approach for subclasses of analytic functions with negative coefficients
HM Srivastava, SS Eker, B Şeker
Integral Transforms and Special Functions 20 (9), 687-699 2009
Citations: 12



Sălăgean-type harmonic multivalent functions.
JM Jahangiri, B Şeker, SS Eker
Acta Universitatis Apulensis. Mathematics-Informatics 18, 233-244 2009
Citations: 10



Sharp bounds for the second Hankel determinant of logarithmic coefficients for strongly starlike and strongly convex functions
S Smer Eker, B Şeker, B eki, M Acu
Axioms 11 (8), 369 2022
Citations: 9



On subclasses of m-fold symmetric bi-univalent functions
B Şeker, İ Taymur
Işık University Press 2021
Citations: 8



On subclasses of analytic functions associated with Miller-Ross-type Poisson distribution series
B Şeker, S Smer Eker, B Cekic
Sahand Communications in Mathematical Analysis 19 (4), 69-79 2022
Citations: 7



Spiral-like functions associated with Miller–Ross-type Poisson distribution series
S Smer Eker, G Murugusundaramoorthy, B Şeker, B eki
Boletn de la Sociedad Matemtica Mexicana 29 (1), 16 2023
Citations: 5



On subordination result associated with certain subclass of analytic functions involving Salagean operator
SS Eker, B Şeker, S Owa
Journal of Inequalities and Applications 2007, 1-6 2007
Citations: 5



On normalized Rabotnov function associated with certain subclasses of analytic functions
S Sumer Eker, B Şeker, S Ece
Проблемы анализа—Issues of Analysis 12 (2), 97-106 2023
Citations: 3



Certain subclasses of analytic functions associated with Miller-Ross-type Poisson distribution series
B Şeker, B eki
호남수학학술지 44 (4), 504-512 2022
Citations: 3



On certain subclasses of starlike and convex functions associated with Pascal distribution series
B ŞEKER, SS EKER
Turkish Journal of Mathematics 44 (6), 1982-1989 2020
Citations: 3



Sˆalˆagean-type harmonic univalent functions
B Şeker
2011
Citations: 3



The Second Hankel Determinant of Logarithmic Coefficients for Strongly Ozaki Close-to-Convex Functions
S Smer Eker, A Lecko, B eki, B Şeker
Bulletin of the Malaysian Mathematical Sciences Society 46 (6), 183 2023
Citations: 2



On certain subclass of univalent functions of complex order associated with Pascal distribution series
B ŞEKER, SS EKER
Communications Faculty of Sciences University of Ankara Series A1 2021
Citations: 2