On a class of univalent functions.
Remarks on a paper by Silverman.
On the summation of the Fourier series
Starlikeness of functions satisfying a differential inequality
In a recent paper Fournier and Ruscheweyh established a theorem related to a certain functional. We extend their result differently, and then use it to obtain a precise upper bound on α so that for f analytic in |z| < 1, f(0) = f'(0) - 1 = 0 and satisfying Re{zf''(z)} > -λ, the function f is starlike.
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