Properties of Some Extremal Nonvanishing Univalent Functions.

Johnny E. Brown

Displaying similar documents to “Properties of Some Extremal Nonvanishing Univalent Functions.”

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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.