7 papers
Radii problems for normalized hyper-Bessel function
Evrim Toklu, Osman Kara
The main purpose of the present paper is to ascertain the radii of starlikeness and convexity associated with lemniscate of Bernoulli and the Janowski function, for…
On some geometric properties of normalized Wright functions
Evrim Toklu, Neslihan Karagöz
The main purpose of the present paper is to determine the radii of starlikeness and convexity associated with lemniscate of Bernoulli and the Janowski function, for…
Radii of starlikeness and convexity of Mittag--Leffler functions
Evrim Toklu
In this paper we deal with the radii of starlikeness and convexity of the Mittag--Leffler function for three different kinds of normalization by making use of their Hadamard fa…
Radii of starlikeness and convexity of generalized Bessel functions
Evrim Toklu
The main purpose of this paper is to determine the radii of starlikeness and convexity of the generalized Bessel functions for three different kinds of normalization by…
Radii of starlikeness and convexity of generalized Struve functions
Evrim Toklu
In this paper, it is aimed to determine the radii of starlikeness and convexity of the normalized generalized Struve functions for three different kinds of normalization and to fin…
Second Hankel determinant for certain subclasses of bi-univalent functions involving Chebyshev polynomials
Halit Orhan, Evrim Toklu, Ekrem Kadıoğlu
In this paper our purpose is to find upper bound estimate for the second Hankel determinant for functions defined by convolution belonging to the class $\m…