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Upper bound for third Hankel determinant of a class of analytic functions
(Işık University Press, 2023-10)
We establish upper bounds for second Hankel determinant, the Fekete-Szegö functional and third Hankel determinant for normalized analytic functions f ∈ Wβ(α, γ),Wβ(α, γ) = { f : Re ((1 − α + 2γ)f(z)/z+ (α − 2γ)fʹ(z) + ...