## Univalent functions with negative coefficients.(English)Zbl 0311.30007

### MSC:

 30C45 Special classes of univalent and multivalent functions of one complex variable (starlike, convex, bounded rotation, etc.) 30C50 Coefficient problems for univalent and multivalent functions of one complex variable 30C75 Extremal problems for conformal and quasiconformal mappings, other methods
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### References:

 [1] L. Brickman, T. H. MacGregor, and D. R. Wilken, Convex hulls of some classical families of univalent functions, Trans. Amer. Math. Soc. 156 (1971), 91 – 107. · Zbl 0227.30013 [2] A. W. Goodman, Univalent functions and nonanalytic curves, Proc. Amer. Math. Soc. 8 (1957), 598 – 601. · Zbl 0166.33002 [3] Thomas H. MacGregor, The radius of convexity for starlike functions of order 1\over2, Proc. Amer. Math. Soc. 14 (1963), 71 – 76. · Zbl 0113.05505 [4] -, A subordination for convex functions of order $$\alpha$$, J. London Math Soc. (to appear). [5] A. Schild, On a class of functions schlicht in the unit circle, Proc. Amer. Math. Soc. 5 (1954), 115 – 120. · Zbl 0055.30703 [6] Albert Schild, On a class of univalent, star shaped mappings, Proc. Amer. Math. Soc. 9 (1958), 751 – 757. · Zbl 0087.07703
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