On Nonvanishing Univalent Functions with Real Coefficients*
نویسندگان
چکیده
S O u {1} is a compact subset of A. Duren and Schober had been interested in extreme points and support points of S o. Recall that a support point of a family F is a function which maximizes the real part of some continuous linear functional, that is not constant over F. We shall give a characterization of the extreme points and support points of the subfamily So(R ) of nonvanishing univalent functions whose Taylor expansions at the origin have real coefficients.
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