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Regular functions f(\(z\)) for which \(zf\)’(\(z\)) is \(\alpha\)-spiral. (English) Zbl 0245.30009


MSC:

30C45 Special classes of univalent and multivalent functions of one complex variable (starlike, convex, bounded rotation, etc.)
30C75 Extremal problems for conformal and quasiconformal mappings, other methods
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