Starlikeness associated with parabolic regions.
Coefficients of the inverse of strongly starlike functions.
A class of multivalent functions with positive coefficients defined by convolution.
Convolution and differential subordination for multivalent functions.
On subordination and superordination of the multiplier transformation for meromorphic functions.
Convolution properties of classes of analytic and meromorphic functions.
A third-order differential equation and starlikeness of a double integral operator.
Subordination by convex functions.
Sufficient conditions for Janowski starlikeness.
Subordination and superordination of the Liu-Srivastava linear operator on meromorphic functions.
Neighborhoods of starlike and convex functions associated with parabola.
Subordination and superordination on Schwarzian derivatives.
Subordination for higher-order derivatives of multivalent functions.
Subclasses of meromorphic functions associated with convolution.
Subordination and superordination for multivalent functions associated with the Dziok-Srivastava operator.
Learning and teaching mathematics with a graphic calculator.
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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