Estimation of the functional A_2 • A_3 In the class of bounded symmetric univalent functions

Pietrasik, Longin

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Displaying similar documents to “Estimation of the functional A_2 • A_3 In the class of bounded symmetric univalent functions”

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Estimation of the functional a_3-αa_2^2 in the class S of holomorphic and univalent functions for α complex

Szwankowaki, Andrzej (2015-11-13T12:50:52Z)

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Addenda to my work: "Estimation of the functional |a_3 - aα_2^2| in the class S of holomorphic and univalent functions for α complex"

Szwankowski, Andrzej (2015-12-18T19:21:18Z)

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On the estimate of the fourth-order homogeneous coefficient functional for univalent functions

Larisa Gromova, Alexander Vasil'ev (1996)

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The functional |c₄ + pc₂c₃ + qc³₂| is considered in the class of all univalent holomorphic functions $f (z) = z + \sum_{n = 2}^{\infty} c_{n} z^{n}$ in the unit disk. For real values p and q in some regions of the (p,q)-plane the estimates of this functional are obtained by the area method for univalent functions. Some new regions are found where the Koebe function is extremal.

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O. Tammi (1967)

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On a class of univalent functions defined by Sălăgean differential operator.

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Two-point distortion theorems for bounded univalent functions.

Ma, William, Minda, David (1997)

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On the univalent, bounded, non-vanishing and symmetric functions in the unit disk

J. Śladkowska (1996)

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The paper is devoted to a class of functions analytic, univalent, bounded and non-vanishing in the unit disk and in addition, symmetric with respect to the real axis. Variational formulas are derived and, as applications, estimates are given of the first and second coefficients in the considered class of functions.