Browsing by Author "Mostafa, A. O."
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Item Quasi-subordination and coefficient bounds for certain classes of meromorphic functions of complex order(Ankara Üniversitesi Fen Fakültesi, 2019-02-01) Zayed, H. M.; Bulut, Serap; Mostafa, A. O.; Other; OtherIn this paper, we obtain Fekete-Szegö functional |a₁-μa₀²| for functions of the classes Σ_{q}^{∗}(ϕ) and Σ_{q,λ,b}^{∗}(g,ϕ) using quasi-subordination. Sharp bounds for the Fekete-Szegö functional |a₁-μa₀²| are obtained. Also, applications of the main results for subclasses of functions defined by Bessel function are also considered.