Cilt:68 Sayı:01 (2019)

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Best bound for λ- pseudo starlike functions
(Ankara Üniversitesi Fen Fakültesi, 2019-02-01) KRİSHNA, D. Vamshee; SHALİNİ, D.; Other; Other
In this paper, we obtain sharp upper bound to the second Hankel determinant for the functions belong to the class of λ- pseudo starlike functions, an interesting sub class of univalent functions defined in the open unit disc E={z:|z|<1}, using Toeplitz determinants.
Coefficient estimates for bi-concave functions
(Ankara Üniversitesi, 2019-02-01) Sakar, F. Müge; Güney, H. Özlem; Other; Other
In this study,a new class C_{Σ}^{p,q}(α) of analytic and bi-concave functions were presented in the open unit disc. The coefficients estimates on the first two Taylor-Maclaurin coefficients |a₂| and |a₃| were found for functions belonging to this class.