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On products of starlike functions. I

Volume 55 / 1991

Georgi Dimkov Annales Polonici Mathematici 55 (1991), 75-79 DOI: 10.4064/ap-55-1-75-79

Abstract

We deal with functions given by the formula $F(z) = zG'(z) = z∏_{j=1}^n (f_j(z)/z)^{a_j}$ where $f_j(z)$ are starlike of order $α_j$ and $a_j$ are complex constants. In particular, radii of starlikeness and convexity as well as orders of starlikeness and convexity are found.

Authors

  • Georgi Dimkov

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