Refaad for Studies, Research and Developement
Initial bounds for analytic and bi-univalent functions by means of (p,q)−Chebyshev polynomials deﬁned by differential operator
2519-9269 (Print)
2519-9277 (Online)
Volume 7
Issue 2
2019
Dec
0
Initial bounds for analytic and bi-univalent functions by means of (p,q)−Chebyshev polynomials deﬁned by differential operator
45
51
English
Ala AmourahDepartment of Mathematics, Faculty of Science and Technology, Irbid National University, Irbid, Jordanalaammour@yahoo.com
10.31559/glm2019.7.2.1
In this paper, a subclassT ζ Σ (m,γ,λ,p,q) of analytic and bi-univalent functions by means of (p,q)−Chebyshev polynomials is introduced. Certain coefﬁcient bounds for functions belong to this subclass are obtained. In addition, the Fekete-Szeg¨ o problem is solved in this subclass.
coefﬁcient inequalities; bi-univalent functions; Fekete-Szeg¨o problems
http://www.refaad.com/views/GLM/721.html
http://www.refaad.com/Files/GLM/7-2-1.pdf