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Certain subclasses of multivalent prestarlike functions with negative coefficients

Aouf M.

Demonstratio Mathematica

2007

Vol. 40, nr 4

799-814

The object of the present paper is to investigate coefficient estimates and closure theorems for functions belonging to the class R[..] of p-valent prestarlike functions with negative coefficients. We also consider integral operators associalted with functions belonging to the class R[..]. Furthermore, distortion theorems involving a generalized fractional integral (derivative) opertaor for functions in this class are proved.