Bilal SEKER
@batman.edu.tr
Batman University, Faculty of Art and Science
Batman University
RESEARCH INTERESTS
Geometric Function Theory, Univalent Functions
20
Scopus Publications
263
Scholar Citations
10
Scholar h-index
11
Scholar i10-index
Scopus Publications
- The second Hankel determinant of logarithmic coefficients and logarithmic inverse coefficients for the class of bounded turning functions of order α
Bilal Şeker, Bilal Çekiç, Sevtap Sümer, and Onur Akçiçek
Springer Science and Business Media LLC - SECOND HANKEL DETERMINANT OF THE LOGARITHMIC COEFFICIENTS FOR A SUBCLASS OF UNIVALENT FUNCTIONS
Hari Mohan Srivastava, Sevtap Sümer Eker, Bilal Şeker, and Bilal Çekiç
Mathematical Notes
In the present paper, we give the bounds for the second Hankel determinant of the logarithmic coefficients of a certain subclass of normalized univalent functions, which we have introduced here. Relevant connections of the results, which we have presented here, with those available in the existing literature are also described briefly. - 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
- 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. - 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 and logarithmic inverse coefficients for the class of bounded turning functions of order α
B Şeker, B eki, S Smer, O Akiek
Lithuanian Mathematical Journal, 1-16 2024 - SECOND HANKEL DETERMINANT OF THE LOGARITHMIC COEFFICIENTS FOR A SUBCLASS OF UNIVALENT FUNCTIONS
Srivastava, Hari mohan, Eker, Sevtap sumer, B Seker, B Cekic
MISKOLC MATHEMATICAL NOTES 25 (1), 479-488 2024 - A STUDY ON A HARMONIC UNIVALENT FUNCTIONS IN TERMS OF Q DIFFERENCE OPERATOR.
A Canbulat, FM Sakar, B Seker
Bulletin of International Mathematical Virtual Institute 14 (1) 2024 - Second Hankel determinant of the logarithmic coefficients for a subclass of univalent functions
HM Srivastava, SS Eker, B Şeker, B eki
Miskolc Mathematical Notes 25 (1), 479-488 2024 - A study on various subclasses of uniformly harmonic starlike mappings by Pascal distribution series
FM Sakar, N Tasar, B Seker
Journal of Mathematical Extension 17 2023 - 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 - A class of Poisson distributions based upon a two parameter Mittag-Leffler type function
HM Srivastava, B Seker, SS Eker, B eki
J. Nonlinear Convex Anal 24 (2), 475-485 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
S Bilal, SE Sevtap, C Bilal
Honam Mathematical Journal 44 (4), 504-512 2022 - NORMALIZED DINI FUNCTIONS CONNECTED WITH k-UNIFORMLY CONVEX AND k-STARLIKE FUNCTIONS
S ECE, SS EKER, B SEKER
Journal of applied mathematics & informatics 39 (5_6), 717-723 2021 - 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
TWMS Journal of Applied and Engineering Mathematics 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 Babeş-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
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: 36 - 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: 23 - On a class of multivalent functions defined by Salagean operator
SS Eker, B Seker
General Mathematics 15 (2-3), 154-163 2007
Citations: 23 - 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: 12 - 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: 11 - Subclasses of k-uniformly convex and k-starlike functions defined by Sălăgean operator
B Seker, M Acu, SS Eker
Bulletin of the Korean Mathematical Society 48 (1), 169-182 2011
Citations: 11 - 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: 10 - 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: 10 - A class of Poisson distributions based upon a two parameter Mittag-Leffler type function
HM Srivastava, B Seker, SS Eker, B eki
J. Nonlinear Convex Anal 24 (2), 475-485 2023
Citations: 9 - On subclasses of m-fold symmetric bi-univalent functions
B Şeker, İ Taymur
TWMS Journal of Applied and Engineering Mathematics 2021
Citations: 8 - On subclasses of bi-close-to-convex functions related to the odd-starlike functions
B Seker, S Smer Eker
Palestine Journal of Mathematics 6, 215-221 2017
Citations: 8 - 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: 7 - 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: 6 - 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: 6 - A subclass of close-to-convex functions
B Seker, NE Cho
Hacettepe Journal of Mathematics and Statistics 42 (4), 373-379 2013
Citations: 6 - Certain subclasses of analytic functions associated with Miller-Ross-type Poisson distribution series
S Bilal, SE Sevtap, C Bilal
Honam Mathematical Journal 44 (4), 504-512 2022
Citations: 5 - Coefficient bounds for new subclasses of bi-univalent functions
B Seker, V Mehmetoglu
New Trends in Mathematical Sciences 4 (3), 197-203 2016
Citations: 5