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Argument property for certain analytic functions. (English) Zbl 1229.30013
Summary: Let $P$ be the class of functions $p(z)$ of the form $p(z) = 1 + \sum^\infty_{n=1} c_n z^n$ which are analytic in the open unit disk $U = \{z : |z| < 1\}$. The object of the present paper is to derive certain argument inequalities of analytic functions $p(z)$ in $P$.
##### MSC:
 30C45 Special classes of univalent and multivalent functions
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##### References:
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