arXiv subjects
Publications and source records attributed to Alaa H. El-Qadeem.
In this paper, a comprehensive subclass of bi-univalent functions class are introduced and investigated. Using the Faber polynomials, estimation of the coefficients $|a_n|$ and certain Fekete-Szegö inequality of Maclaurin expansion of functions in this subclass are concluded. Finally, some earlier results are pointed out and improved.
Our objective in this paper is to introduce and investigate comprehensive-constructed subclasses of normalized analytic and bi-univalent functions on the unit open disc. Bounds for the second and third Tayler-Maclaurin coefficients of functions belonging to this subclasses were investigated. Furthermore, some improvement and connections to some of the previous known results are also pointed out.
In this paper, new class of bi-univalent functions are introduced. Upper bound of the second Hankel determinant $|H_2(2)|$ of subclass of bi-univalant functions class $Σ$, which defined by subordination, investigated. Furthermore, some results concluded as a special case of our main results and corrected some previous researchers results which investigated by miscalculation.
In this paper, we define the subclasses $R_{μ,p}^δ(α;A,B)\ $ and $ P_{μ,p}^δ(α;A,B)\ $ of analytic functions in the open unit disc of complex plain. Then the neighborhood properties, integral means inequalities and some results concerning the partial sums of the functions belonging to these two subclasses are discussed.
In this paper, we introduce new technique for determining some necessary and sufficient conditions of the normalized Bessel functions $j_ν$, normalized Struve functions $h_ν$ and normalized Lommel functions $s_{μ,ν}$ of the first kind, to be in the subclasses of starlike and convex functions of order $α$ and type $β$.
In this paper, we determine necessary and sufficient conditions for the generalized Bessel function to be in certain subclasses of starlike and convex functions. Also, we obtain several corollaries as special cases of the main results, these corollaries gives the corresponding results of the familiar, modified and spherical Bessel functions.